ARC CENTRE OF EXCELLENCE FOR ALL SKY ASTROPHYSICS IN 3D (ASTRO 3D)

Early Results from GLASS-JWST. X. Rest-frame UV-optical Properties of Galaxies at 7 < z < 9

N Leethochawalit, M Trenti, P Santini, L Yang, E Merlin, M Castellano, A Fontana, T Treu, C Mason, K Glazebrook, T Jones, B Vulcani, T Nanayakkara, D Marchesini, S Mascia, T Morishita, G Roberts-Borsani, A Bonchi, D Paris, K Boyett

2023-01-01

We present the first James Webb Space Telescope/NIRCam-led determination of 7 < z < 9 galaxy properties based on broadband imaging..

JWST PEARLS. Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results

Rogier A Windhorst, Seth H Cohen, Rolf A Jansen, Jake Summers, Scott Tompkins, Christopher J Conselice, Simon P Driver, Haojing Yan, Dan Coe, Brenda Frye, Norman Grogin, Anton Koekemoer, Madeline A Marshall, Rosalia O'Brien, Nor Pirzkal, Aaron Robotham, Russell E Ryan, Christopher NA Willmer, Timothy Carleton, Jose M Diego

2023-01-01

We give an overview and describe the rationale, methods, and first results from NIRCam images of the JWST “Prime Extragalactic Are..

Bayesian jackknife tests with a small number of subsets: application to HERA 21 cm power spectrum upper limits

Michael J Wilensky, Fraser Kennedy, Philip Bull, Joshua S Dillon, Zara Abdurashidova, Tyrone Adams, James E Aguirre, Paul Alexander, Zaki S Ali, Rushelle Baartman, Yanga Balfour, Adam P Beardsley, Gianni Bernardi, Tashalee S Billings, Judd D Bowman, Richard F Bradley, Jacob Burba, Steven Carey, Chris L Carilli, Carina Cheng

2022-12-08

<jats:title>ABSTRACT</jats:title> <jats:p>We present a Bayesian jackknife test for assessing the probability that a..

Early Results from GLASS-JWST. VI. Extreme Rest-optical Equivalent Widths Detected in NIRISS Wide Field Slitless Spectroscopy

K Boyett, S Mascia, L Pentericci, N Leethochawalit, M Trenti, G Brammer, G Roberts-Borsani, V Strait, T Treu, M Bradac, K Glazebrook, A Acebron, P Bergamini, A Calabro, M Castellano, A Fontana, C Grillo, A Henry, T Jones, D Marchesini

2022-12-01

Wide Field Slitless Spectroscopy (WFSS) provides a powerful tool for detecting strong line emission in star-forming galaxies (SFGs..

Optimising MWA EoR data processing for improved 21-cm power spectrum measurements-fine-tuning ionospheric corrections

J Kariuki Chege, CH Jordan, C Lynch, CM Trott, JLB Line, B Pindor, S Yoshiura

2022-10-14

The redshifted cosmological 21-cm signal emitted by neutral hydrogen during the first billion years of the universe is much fainte..

Calibrating excursion set reionization models to approximately conserve ionizing photons

Jaehong Park, Bradley Greig, Andrei Mesinger

2022-10-04

<jats:title>ABSTRACT</jats:title> <jats:p>The excursion set reionization framework is widely used due to its speed ..

Direct Optimal Mapping for 21 cm Cosmology: A Demonstration with the Hydrogen Epoch of Reionization Array

Zhilei Xu, Jacqueline N Hewitt, Kai-Feng Chen, Honggeun Kim, Joshua S Dillon, Nicholas S Kern, Miguel F Morales, Bryna J Hazelton, Ruby Byrne, Nicolas Fagnoni, Eloy de Lera Acedo, Zara Abdurashidova, Tyrone Adams, James E Aguirre, Paul Alexander, Zaki S Ali, Rushelle Baartman, Yanga Balfour, Adam P Beardsley, Gianni Bernardi

2022-10-01

Motivated by the desire for wide-field images with well-defined statistical properties for 21 cm cosmology, we implement an optima..

Early Results from GLASS-JWST. I: Confirmation of Lensed z >= 7 Lyman-break Galaxies behind the Abell 2744 Cluster with NIRISS

Guido Roberts-Borsani, Takahiro Morishita, Tommaso Treu, Gabriel Brammer, Victoria Strait, Xin Wang, Marusa Bradac, Ana Acebron, Pietro Bergamini, Kristan Boyett, Antonello Calabro, Marco Castellano, Adriano Fontana, Karl Glazebrook, Claudio Grillo, Alaina Henry, Tucker Jones, Matthew Malkan, Danilo Marchesini, Sara Mascia

2022-10-01

We present the first search for z ≥ 7, continuum-confirmed Lyman break sources with NIRISS/WFS spectroscopy over the Abell 2744 Fr..

Early Results from GLASS-JWST. II. NIRCam Extragalactic Imaging and Photometric Catalog

Emiliano Merlin, Andrea Bonchi, Diego Paris, Davide Belfiori, Adriano Fontana, Marco Castellano, Mario Nonino, Gianluca Polenta, Paola Santini, Lilan Yang, Karl Glazebrook, Tommaso Treu, Guido Roberts-Borsani, Michele Trenti, Simon Birrer, Gabriel Brammer, Claudio Grillo, Antonello Calabro, Danilo Marchesini, Charlotte Mason

2022-10-01

We present the reduced images and multiwavelength catalog of the first JWST NIRCam extragalactic observations from the GLASS Early..

Radio Analysis of SN2004C Reveals an Unusual CSM Density Profile as a Harbinger of Core Collapse

Lindsay DeMarchi, R Margutti, J Dittman, A Brunthaler, D Milisavljevic, Michael F Bietenholz, C Stauffer, D Brethauer, D Coppejans, K Auchettl, KD Alexander, CD Kilpatrick, Joe S Bright, LZ Kelley, Michael C Stroh, W Jacobson-Galan

2022-10-01

We present extensive multifrequency Karl G. Jansky Very Large Array (VLA) and Very Long Baseline Array (VLBA) observations of the ..

Generating extremely large-volume reionization simulations

Bradley Greig, J Stuart B Wyithe, Steven G Murray, Simon J Mutch, Cathryn M Trott

2022-09-30

<jats:title>ABSTRACT</jats:title> <jats:p>Preparing for a first detection of the 21-cm signal during reionization b..

Unresolved z similar to 8 Point Sources and Their Impact on the Bright End of the Galaxy Luminosity Function

Yuzo Ishikawa, Takahiro Morishita, Massimo Stiavelli, Nicha Leethochawalit, Harry Ferguson, Roberto Gilli, Charlotte Mason, Michele Trenti, Tommaso Treu, Colin Norman

2022-09-12

The distribution and properties of the first galaxies and quasars are critical pieces of the puzzle in understanding galaxy evolut..

The prevalence of galaxy overdensities around UV-luminous Lyman 𝛼� emitters in the Epoch of Reionization

E Leonova, PA Oesch, Y Qin, RP Naidu, JSB Wyithe, S de Barros, RJ Bouwens, RS Ellis, RM Endsley, A Hutter, GD Illingworth, J Kerutt, I Labbe, N Laporte, D Magee, SJ Mutch, GW Roberts-Borsani, R Smit, DP Stark, M Stefanon

2022-08-22

Before the end of the Epoch of Reionization, the Hydrogen in the Universe was predominantly neutral. This leads to a strong attenu..

SkyHopper mission science case I: Identification of high redshift Gamma-Ray Bursts through space-based near-infrared afterglow observations

M Thomas, M Trenti, J Greiner, M Skrutskie, Duncan A Forbes, S Klose, KJ Mack, R Mearns, B Metha, E Skafidas, G Tagliaferri, N Tanvir

2022-08-05

Long-duration gamma-ray burst (GRB) afterglow observations offer cutting-edge opportunities to characterise the star formation his..

The GLASS-JWST Early Release Science Program. I. Survey Design and Release Plans

T Treu, G Roberts-Borsani, M Bradac, G Brammer, A Fontana, A Henry, C Mason, T Morishita, L Pentericci, X Wang, A Acebron, M Bagley, P Bergamini, D Belfiori, A Bonchi, K Boyett, K Boutsia, A Calabro, GB Caminha, M Castellano

2022-08-01

The GLASS-JWST Early Release Science (hereafter GLASS-JWST-ERS) Program will obtain and make publicly available the deepest extrag..

Weak Mass Loss from the Red Supergiant Progenitor of the Type II SN 2021yja

Griffin Hosseinzadeh, Charles D Kilpatrick, Yize Dong, David J Sand, Jennifer E Andrews, K Azalee Bostroem, Daryl Janzen, Jacob E Jencson, Michael Lundquist, Nicolas E Meza Retamal, Jeniveve Pearson, Stefano Valenti, Samuel Wyatt, Jamison Burke, Daichi Hiramatsu, D Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino

2022-08-01

We present high-cadence optical, ultraviolet (UV), and near-infrared data of the nearby (D ≈ 23 Mpc) Type II supernova (SN) 2021yj..

Investigating the Nature of the Luminous Ambiguous Nuclear Transient ASASSN-17jz

Thomas W-S Holoien, Jack MM Neustadt, Patrick J Vallely, Katie Auchettl, Jason T Hinkle, Cristina Romero-Canizales, Benjamin J Shappee, Christopher S Kochanek, KZ Stanek, Ping Chen, Subo Dong, Jose L Prieto, Todd A Thompson, Thomas G Brink, Alexei Filippenko, WeiKang Zheng, David Bersier, Subhash Bose, Adam J Burgasser, Sanyum Channa

2022-07-01

We present observations of the extremely luminous but ambiguous nuclear transient (ANT) ASASSN-17jz, spanning roughly 1200 days of..

Hydrogen reionization ends by z=5.3: Lyman-alpha optical depth measured by the XQR-30 sample

Sarah E Bosman, Frederick B Davies, George D Becker, Laura C Keating, Rebecca L Davies, Yongda Zhu, Anna-Christina Eilers, Valentina D'Odorico, Fuyan Bian, Manuela Bischetti, Stefano Cristiani, Xiaohui Fan, Emanuele P Farina, Martin G Haehnelt, Joseph F Hennawi, Girish Kulkarni, Andrei Mesinger, Romain A Meyer, Masafusa Onoue, Andrea Pallottini

2022-06-07

The presence of excess scatter in the Ly-α forest at z ∼5.5, together with the existence of sporadic extended opaque Gunn-Peterson..

Long Dark Gaps in the Ly beta Forest at z < 6: Evidence of Ultra-late Reionization from XQR-30 Spectra

Yongda Zhu, George D Becker, Sarah EI Bosman, Laura C Keating, Valentina D'Odorico, Rebecca L Davies, Holly M Christenson, Eduardo Banados, Fuyan Bian, Manuela Bischetti, Huanqing Chen, Frederick B Davies, Anna-Christina Eilers, Xiaohui Fan, Prakash Gaikwad, Bradley Greig, Martin G Haehnelt, Girish Kulkarni, Samuel Lai, Andrea Pallottini

2022-06-01

We present a new investigation of the intergalactic medium near reionization using dark gaps in the Lyβ forest. With its lower opt..

The Circumstellar Environments of Double-peaked, Calcium-strong Transients 2021gno and 2021inl

WV Jacobson-Galan, P Venkatraman, R Margutti, D Khatami, G Terreran, RJ Foley, R Angulo, CR Angus, K Auchettl, PK Blanchard, A Bobrick, JS Bright, D Brout, KC Chambers, CD Couch, DA Coulter, K Clever, KW Davis, TJL de Boer, L DeMarchi

2022-06-01

We present panchromatic observations and modeling of calcium-strong supernovae (SNe) 2021gno in the star-forming host-galaxy NGC 4..

The 21-cm signal from the cosmic dawn: metallicity dependence of high-mass X-ray binaries

Harman Deep Kaur, Yuxiang Qin, Andrei Mesinger, Andrea Pallottini, Tassos Fragos, Antara Basu-Zych

2022-05-24

X-rays from high-mass X-ray binaries (HMXBs) are likely the main source of heating of the intergalactic medium (IGM) during Cosmic..

The Curious Case of ASASSN-20hx: A Slowly Evolving, UV- and X-Ray-Luminous, Ambiguous Nuclear Transient

Jason T Hinkle, Thomas W-S Holoien, Benjamin J Shappee, Jack MM Neustadt, Katie Auchettl, Patrick J Vallely, Melissa Shahbandeh, Matthias Kluge, Christopher S Kochanek, KZ Stanek, Mark E Huber, Richard S Post, David Bersier, Christopher Ashall, Michael A Tucker, Jonathan P Williams, Thomas de Jaeger, Aaron Do, Michael Fausnaugh, Daniel Gruen

2022-05-01

We present observations of ASASSN-20hx, a nearby ambiguous nuclear transient (ANT) discovered in NGC 6297 by the All-Sky Automated..

IGM damping wing constraints on reionization from covariance reconstruction of two z greater than or similar to 7 QSOs

Bradley Greig, Andrei Mesinger, Frederick B Davies, Feige Wang, Jinyi Yang, Joseph F Hennawi

2022-04-14

Bright, high-redshift (z > 6) QSOs are powerful probes of the ionization state of the intervening intergalactic medium (IGM). The ..

Is the High-energy Neutrino Event IceCube-200530A Associated with a Hydrogen-rich Superluminous Supernova?

Tetyana Pitik, Irene Tamborra, Charlotte R Angus, Katie Auchettl

2022-04-01

The Zwicky Transient Facility follow-up campaign of alerts released by the IceCube Neutrino Observatory has led to the likely iden..

The Role of the Instrumental Response in 21 cm Epoch of Reionization Power Spectrum Gridding Analyses

Nichole Barry, Aman Chokshi

2022-04-01

Reconstruction of the sky brightness measured by radio interferometers is typically achieved through gridding techniques, or histo..

A Carbon/Oxygen-dominated Atmosphere Days after Explosion for the "Super-Chandrasekhar" Type Ia SN 2020esm

Georgios Dimitriadis, Ryan J Foley, Nikki Arendse, David A Coulter, Wynn Jacobson-Galan, Matthew R Siebert, Luca Izzo, David O Jones, Charles D Kilpatrick, Yen-Chen Pan, Kirsty Taggart, Katie Auchettl, Christa Gall, Jens Hjorth, Daniel Kasen, Anthony L Piro, Sandra Raimundo, Enrico Ramirez-Ruiz, Armin Rest, Jonathan J Swift

2022-03-01

Seeing pristine material from the donor star in a type Ia supernova (SN Ia) explosion can reveal the nature of the binary system. ..

Epoch of reionization parameter estimation with the 21-cm bispectrum

Catherine A Watkinson, Bradley Greig, Andrei Mesinger

2022-03-01

We present the first application of the isosceles bispectrum to MCMC parameter inference from the cosmic 21-cm signal. We extend t..

Testing the Momentum-driven Supernova Feedback Paradigm in M31

Sumit K Sarbadhicary, Davide Martizzi, Enrico Ramirez-Ruiz, Eric Koch, Katie Auchettl, Carles Badenes, Laura Chomiuk

2022-03-01

Momentum feedback from isolated supernova remnants (SNRs) have been increasingly recognized by modern cosmological simulations as ..

The Physical Properties of Luminous z greater than or similar to 8 Galaxies and Implications for the Cosmic Star Formation Rate Density from similar to 0.35 deg(2) of (Pure-)Parallel HST Observations*

Guido Roberts-Borsani, Takahiro Morishita, Tommaso Treu, Nicha Leethochawalit, Michele Trenti

2022-03-01

We present the largest systematic, Hubble Space Telescope (HST)-based search to date for luminous z ≳ 8 galaxy candidates using ∼1..

The impact of the first galaxies on cosmic dawn and reionization

Julian B Munoz, Yuxiang Qin, Andrei Mesinger, Steven G Murray, Bradley Greig, Charlotte Mason

2022-02-22

The formation of the first galaxies during cosmic dawn and reionization (at redshifts z = 5-30), triggered the last major phase tr..

SN 2020kyg and the rates of faint Iax supernovae from ATLAS

Shubham Srivastav, SJ Smartt, ME Huber, KC Chambers, CR Angus, T-W Chen, FP Callan, JH Gillanders, OR McBrien, SA Sim, M Fulton, J Hjorth, KW Smith, DR Young, K Auchettl, JP Anderson, G Pignata, TJL de Boer, C-C Lin, EA Magnier

2022-02-15

We present multiwavelength follow-up observations of the ATLAS discovered faint Iax supernova SN 2020kyg that peaked at an absolut..

SkyMapper colours of Seyfert galaxies and changing-look AGN - II. Newly discovered changing-look AGN

Wei Jeat Hon, Christian Wolf, Christopher A Onken, Rachel Webster, Katie Auchettl

2022-02-03

Changing-look active galactic nuclei (CLAGN) are AGN that change type as their broad emission lines appear or disappear, which is ..

First Results from HERA Phase I: Upper Limits on the Epoch of Reionization 21 cm Power Spectrum

Zara Abdurashidova, James E Aguirre, Paul Alexander, Zaki S Ali, Yanga Balfour, Adam P Beardsley, Gianni Bernardi, Tashalee S Billings, Judd D Bowman, Richard F Bradley, Philip Bull, Jacob Burba, Steve Carey, Chris L Carilli, Carina Cheng, David R DeBoer, Matt Dexter, Eloy de Lera Acedo, Taylor Dibblee-Barkman, Joshua S Dillon

2022-02-01

We report upper limits on the Epoch of Reionization 21 cm power spectrum at redshifts 7.9 and 10.4 with 18 nights of data (∼36 hr ..

The Early Phases of Supernova 2020pni: Shock Ionization of the Nitrogen-enriched Circumstellar Material

G Terreran, W Jacobson-Galan, JH Groh, R Margutti, DL Coppejans, G Dimitriadis, CD Kilpatrick, DJ Matthews, MR Siebert, CR Angus, TG Brink, A Filippenko, RJ Foley, DO Jones, S Tinyanont, C Gall, H Pfister, Y Zenati, Z Ansari, K Auchettl

2022-02-01

We present multiwavelength observations of the Type II SN 2020pni. Classified at ∼1.3 days after explosion, the object showed narr..

The Rapid X-Ray and UV Evolution of ASASSN-14ko

Anna Payne, Benjamin J Shappee, Jason T Hinkle, Thomas W-S Holoien, Katie Auchettl, Christopher S Kochanek, KZ Stanek, Todd A Thompson, Michael A Tucker, James D Armstrong, Patricia T Boyd, Joseph Brimacombe, Robert Cornect, Mark E Huber, Saurabh W Jha, Chien-Cheng Lin

2022-02-01

ASASSN-14ko is a recently discovered periodically flaring transient at the center of the active galactic nucleus (AGN) ESO 253-G00..

Dark-ages reionization and galaxy formation simulation XX. The Ly alpha IGM transmission properties and environment of bright galaxies during the epoch of reionization

Yuxiang Qin, J Stuart B Wyithe, Pascal A Oesch, Garth D Illingworth, Ecaterina Leonova, Simon J Mutch, Rohan P Naidu

2022-01-12

The highly neutral intergalactic medium (IGM) during the epoch of reionization (EoR) is expected to suppress Ly α emission with da..

An Early-time Optical and Ultraviolet Excess in the Type-Ic SN 2020oi

Alexander Gagliano, Luca Izzo, Charles D Kilpatrick, Brenna Mockler, Wynn Vincente Jacobson-Galan, Giacomo Terreran, Georgios Dimitriadis, Yossef Zenati, Katie Auchettl, Maria R Drout, Gautham Narayan, Ryan J Foley, R Margutti, Armin Rest, DO Jones, Christian Aganze, Patrick D Aleo, Adam J Burgasser, DA Coulter, Roman Gerasimov

2022-01-01

We present photometric and spectroscopic observations of Supernova 2020oi (SN 2020oi), a nearby (∼17 Mpc) type-Ic supernova (SN Ic..

Evidence for the Preferential Disruption of Moderately Massive Stars by Supermassive Black Holes

Brenna Mockler, Angela A Twum, Katie Auchettl, Sierra Dodd, KD French, Jamie AP Law-Smith, Enrico Ramirez-Ruiz

2022-01-01

Tidal disruption events (TDEs) provide a unique opportunity to probe the stellar populations around supermassive black holes (SMBH..

Final Moments. I. Precursor Emission, Envelope Inflation, and Enhanced Mass Loss Preceding the Luminous Type II Supernova 2020tlf

WV Jacobson-Galan, L Dessart, DO Jones, R Margutti, DL Coppejans, G Dimitriadis, RJ Foley, CD Kilpatrick, DJ Matthews, S Rest, G Terreran, PD Aleo, K Auchettl, PK Blanchard, DA Coulter, KW Davis, TJL de Boer, L DeMarchi, MR Drout, N Earl

2022-01-01

We present panchromatic observations and modeling of supernova (SN) 2020tlf, the first normal Type II-P/L SN with confirmed precur..

HERA Phase I Limits on the Cosmic 21 cm Signal: Constraints on Astrophysics and Cosmology during the Epoch of Reionization

Zara Abdurashidova, James E Aguirre, Paul Alexander, Zaki S Ali, Yanga Balfour, Rennan Barkana, Adam P Beardsley, Gianni Bernardi, Tashalee S Billings, Judd D Bowman, Richard F Bradley, Philip Bull, Jacob Burba, Steve Carey, Chris L Carilli, Carina Cheng, David R DeBoer, Matt Dexter, Eloy de Lera Acedo, Joshua S Dillon

2022-01-01

Recently, the Hydrogen Epoch of Reionization Array (HERA) has produced the experiment's first upper limits on the power spectrum o..

Validation of the HERA Phase I Epoch of Reionization 21 cm Power Spectrum Software Pipeline

James E Aguirre, Steven G Murray, Robert Pascua, Zachary E Martinot, Jacob Burba, Joshua S Dillon, Daniel C Jacobs, Nicholas S Kern, Piyanat Kittiwisit, Matthew Kolopanis, Adam Lanman, Adrian Liu, Lily Whitler, Zara Abdurashidova, Paul Alexander, Zaki S Ali, Yanga Balfour, Adam P Beardsley, Gianni Bernardi, Tashalee S Billings

2022-01-01

We describe the validation of the HERA Phase I software pipeline by a series of modular tests, building up to an end-to-end simula..

A Physical Model for the Quasar Luminosity Function Evolution between Cosmic Dawn and High Noon

Keven Ren, Michele Trenti

2021-12-01

Modeling the evolution of the number density distribution of quasars through the quasar luminosity function (QLF) is critical to i..

Chasing the Tail of Cosmic Reionization with Dark Gap Statistics in the Ly alpha Forest over 5 < z < 6

Yongda Zhu, George D Becker, Sarah E Bosman, Laura C Keating, Holly M Christenson, Eduardo Banados, Fuyan Bian, Frederick B Davies, Valentina D'Odorico, Anna-Christina Eilers, Xiaohui Fan, Martin G Haehnelt, Girish Kulkarni, Andrea Pallottini, Yuxiang Qin, Feige Wang, Jinyi Yang

2021-12-01

We present a new investigation of the intergalactic medium (IGM) near the end of reionization using “dark gaps” in the Lyα forest...

SN 2018agk: A Prototypical Type Ia Supernova with a Smooth Power-law Rise in Kepler (K2)

Qinan Wang, Armin Rest, Yossef Zenati, Ryan Ridden-Harper, Georgios Dimitriadis, Gautham Narayan, V Ashley Villar, Mark R Magee, Ryan J Foley, Edward J Shaya, Peter Garnavich, Lifan Wang, Lei Hu, Attila Bodi, Patrick Armstrong, Katie Auchettl, Thomas Barclay, Geert Barentsen, Zsofia Bognar, Joseph Brimacombe

2021-12-01

We present the 30 minutes cadence Kepler/K2 light curve of the Type Ia supernova (SN Ia) SN 2018agk, covering approximately one we..

SKA-low intensity mapping pathfinder updates: deeper 21 cm power spectrum limits from improved analysis frameworks

Nichole Barry, Gianni Bernardi, Bradley Greig, Nicholas Kern, Florent Mertens

2021-11-18

The Square Kilometer Array (SKA) is a planned radio interferometer of unprecedented scale that will revolutionize low-frequency ra..

Epoch of reionization power spectrum limits from Murchison Widefield Array data targeted at EoR1 field

M Rahimi, B Pindor, JLB Line, N Barry, CM Trott, RL Webster, CH Jordan, M Wilensky, S Yoshiura, A Beardsley, J Bowman, R Byrne, A Chokshi, BJ Hazelton, K Hasegawa, E Howard, B Greig, D Jacobs, R Joseph, M Kolopanis

2021-11-02

Current attempts to measure the 21 cm power spectrum of neutral hydrogen during the epoch of reionization (EoR) are limited by sys..

A geostatistical analysis of multiscale metallicity variations in galaxies - I. Introduction and comparison of high-resolution metallicity maps to an analytical metal transport model

Benjamin Metha, Michele Trenti, Tingjin Chu

2021-09-25

Thanks to recent advances in integral field spectroscopy, modern surveys of nearby galaxies are capable of resolving metallicity m..

SN2017jgh: a high-cadence complete shock cooling light curve of a SN IIb with the Kepler telescope

P Armstrong, BE Tucker, A Rest, R Ridden-Harper, Y Zenati, AL Piro, S Hinton, C Lidman, S Margheim, G Narayan, E Shaya, P Garnavich, D Kasen, V Villar, A Zenteno, I Arcavi, M Drout, RJ Foley, J Wheeler, J Anais

2021-09-06

SN 2017jgh is a type IIb supernova discovered by Pan-STARRS during the C16/C17 campaigns of the Kepler/K2 mission. Here, we presen..

The DUVET Survey: Direct T ( e )-based Metallicity Mapping of Metal-enriched Outflows and Metal-poor Inflows in Markarian 1486

Alex J Cameron, Deanne B Fisher, Daniel McPherson, Glenn G Kacprzak, Danielle A Berg, Alberto Bolatto, John Chisholm, Rodrigo Herrera-Camus, Nikole M Nielsen, Bronwyn Reichardt Chu, Ryan J Rickards Vaught, Karin Sandstrom, Michele Trenti

2021-09-01

We present electron temperature (T e) maps for the edge-on system Mrk 1486, affording "direct-method"gas-phase metallicity measure..

Constraining the 21 cm brightness temperature of the IGM at z=6.6 around LAEs with the murchison widefield array

CM Trott, CH Jordan, JLB Line, CR Lynch, S Yoshiura, B McKinley, P Dayal, B Pindor, A Hutter, K Takahashi, RB Wayth, N Barry, A Beardsley, J Bowman, R Byrne, A Chokshi, B Greig, K Hasegawa, BJ Hazelton, E Howard

2021-08-18

The locations of Ly α-emitting galaxies (LAEs) at the end of the Epoch of Reionization (EoR) are expected to correlate with region..

A Real Time Processing system for big data in astronomy: Applications to HERA

P La Plante, PKG Williams, M Kolopanis, JS Dillon, AP Beardsley, NS Kern, M Wilensky, ZS Ali, Z Abdurashidova, JE Aguirre, P Alexander, Y Balfour, G Bernardi, TS Billings, JD Bowman, RF Bradley, P Bull, J Burba, S Carey, CL Carilli

2021-08-14

As current- and next-generation astronomical instruments come online, they will generate an unprecedented deluge of data. Analyzin..

An AMUSING look at the host of the periodic nuclear transient ASASSN-14ko reveals a second AGN

MA Tucker, BJ Shappee, JT Hinkle, JMM Neustadt, M Eracleous, CS Kochanek, JL Prieto, A Payne, L Galbany, JP Anderson, K Auchettl, C Auge, Thomas W-S Holoien

2021-08-13

We present Multi-Unit Spectroscopic Explorer (MUSE) integral-field spectroscopy of ESO 253-G003, which hosts a known active galact..

Discovery of a Fast Iron Low-ionization Outflow in the Early Evolution of the Nearby Tidal Disruption Event AT 2019qiz

Tiara Hung, Ryan J Foley, S Veilleux, SB Cenko, Jane L Dai, Katie Auchettl, Thomas G Brink, Georgios Dimitriadis, Alexei Filippenko, S Gezari, Thomas W-S Holoien, Charles D Kilpatrick, Brenna Mockler, Anthony L Piro, Enrico Ramirez-Ruiz, Cesar Rojas-Bravo, Matthew R Siebert, Sjoert van Velzen, WeiKang Zheng

2021-08-01

We report the results of ultraviolet (UV) and optical photometric and spectroscopic analysis of the tidal disruption event (TDE) A..

Methods of Error Estimation for Delay Power Spectra in 21 cm Cosmology

Jianrong Tan, Adrian Liu, Nicholas S Kern, Zara Abdurashidova, James E Aguirre, Paul Alexander, Zaki S Ali, Yanga Balfour, Adam P Beardsley, Gianni Bernardi, Tashalee S Billings, Judd D Bowman, Richard F Bradley, Philip Bull, Jacob Burba, Steven Carey, Christopher L Carilli, Carina Cheng, David R DeBoer, Matt Dexter

2021-08-01

Precise measurements of the 21 cm power spectrum are crucial for understanding the physical processes of hydrogen reionization. Cu..

The Diversity of Environments around Luminous Quasars at Redshift z similar to 6

Keven Ren, Michele Trenti, Madeline A Marshall, Tiziana Di Matteo, Yueying Ni

2021-08-01

Significant clustering around the rarest luminous quasars is a feature predicted by dark matter theory combined with number densit..

The loudest stellar heartbeat: characterizing the most extreme amplitude heartbeat star system

T Jayasinghe, CS Kochanek, J Strader, KZ Stanek, PJ Vallely, Todd A Thompson, JT Hinkle, BJ Shappee, AK Dupree, K Auchettl, L Chomiuk, E Aydi, K Dage, A Hughes, L Shishkovsky, K Sokolovsky, S Swihart, KT Voggel, IB Thompson

2021-07-31

We characterize the extreme heartbeat star system MACHO 80.7443.1718 in the Large Magellanic Cloud using Transiting Exoplanet Surv..

SOFIA 2-an automated, parallel H I source finding pipeline for the WALLABY survey

T Westmeier, S Kitaeff, D Pallot, P Serra, JM van der Hulst, RJ Jurek, A Elagali, B-Q For, D Kleiner, BS Koribalski, K Lee-Waddell, JR Mould, TN Reynolds, J Rhee, L Staveley-Smith

2021-07-30

We present sofia 2, the fully automated 3D source finding pipeline for the WALLABY extragalactic H i survey with the Australian SK..

Observing the host galaxies of high-redshift quasars with JWST: predictions from the BlueTides simulation

Madeline A Marshall, J Stuart B Wyithe, Rogier A Windhorst, Tiziana Di Matteo, Yueying Ni, Stephen Wilkins, Rupert AC Croft, Mira Mechtley

2021-07-13

The bright emission from high-redshift quasars completely conceals their host galaxies in the rest-frame ultraviolet/optical, with..

A new MWA limit on the 21 cm power spectrum at redshifts similar to 13-17

S Yoshiura, B Pindor, JLB Line, N Barry, CM Trott, A Beardsley, J Bowman, R Byrne, A Chokshi, BJ Hazelton, K Hasegawa, E Howard, B Greig, D Jacobs, CH Jordan, R Joseph, M Kolopanis, C Lynch, B McKinley, DA Mitchell

2021-06-26

Observations in the lowest Murchison Widefield Array (MWA) band between 75 and 100 MHz have the potential to constrain the distrib..

Distinguishing Tidal Disruption Events from Impostors

Ann Zabludoff, Iair Arcavi, Stephanie La Massa, Hagai B Perets, Benny Trakhtenbrot, B Ashley Zauderer, Katie Auchettl, Jane L Dai, K Decker French, Tiara Hung, Erin Kara, Giuseppe Lodato, W Peter Maksym, Yujing Qin, Enrico Ramirez-Ruiz, Nathaniel Roth, Jessie C Runnoe, Thomas Wevers

2021-06-01

Recent claimed detections of tidal disruption events (TDEs) in multi-wavelength data have opened potential new windows into the ev..

A novel approach to investigate chemical inhomogeneities in GRB host galaxies: the Z(abs)-Z(emiss) relation

Benjamin Metha, Alex J Cameron, Michele Trenti

2021-05-22

Models of chemical enrichment and inhomogeneity in high-redshift galaxies are challenging to constrain observationally. In this wo..

A cool and inflated progenitor candidate for the Type Ib supernova 2019yvr at 2.6 yr before explosion

Charles D Kilpatrick, Maria R Drout, Katie Auchettl, Georgios Dimitriadis, Ryan J Foley, David O Jones, Lindsay DeMarchi, K Decker French, Christa Gall, Jens Hjorth, Wynn Jacobson-Galan, Raffaella Margutti, Anthony L Piro, Enrico Ramirez-Ruiz, Armin Rest, Cesar Rojas-Bravo

2021-05-05

We present Hubble Space Telescope imaging of a pre-explosion counterpart to SN 2019yvr obtained 2.6 yr before its explosion as a t..

A unicorn in monoceros: the 3M(circle dot) dark companion to the bright, nearby red giant V723 Mon is a non-interacting, mass-gap black hole candidate

T Jayasinghe, KZ Stanek, Todd A Thompson, CS Kochanek, DM Rowan, PJ Vallely, KG Strassmeier, M Weber, JT Hinkle, F-J Hambsch, D Martin, JL Prieto, T Pessi, D Huber, K Auchettl, LA Lopez, I Ilyin, C Badenes, AW Howard, H Isaacson

2021-05-01

We report the discovery of the closest known black hole candidate as a binary companion to V723 Mon. V723 Mon is a nearby ($d\sim ..

ASASSN-14ko is a Periodic Nuclear Transient in ESO 253-G003

Anna V Payne, Benjamin J Shappee, Jason T Hinkle, Patrick J Vallely, Christopher S Kochanek, Thomas W-S Holoien, Katie Auchettl, KZ Stanek, Todd A Thompson, Jack MM Neustadt, Michael A Tucker, James D Armstrong, Joseph Brimacombe, Paulo Cacella, Robert Cornect, Larry Denneau, Michael M Fausnaugh, Heather Flewelling, Dirk Grupe, AN Heinze

2021-04-01

We present the discovery that ASASSN-14ko is a periodically flaring active galactic nucleus at the center of the galaxy ESO 253-G0..

A Swift Fix for Nuclear Outbursts

Jason T Hinkle, Thomas W-S Holoien, Benjamin J Shappee, Katie Auchettl

2021-04-01

In November 2020, the Swift team announced an update to the UltraViolet and Optical Telescope calibration to correct for the loss ..

Ultra-fast Model Emulation with PRISM: Analyzing the Meraxes Galaxy Formation Model

Ellert van der Velden, Alan R Duffy, Darren Croton, Simon J Mutch

2021-04-01

We demonstrate the potential of an emulator-based approach to analyzing galaxy formation models in the domain where constraining d..

ASASSN-18am/SN 2018gk: an overluminous Type IIb supernova from a massive progenitor

Subhash Bose, Subo Dong, CS Kochanek, MD Stritzinger, Chris Ashall, Stefano Benetti, E Falco, Alexei Filippenko, Andrea Pastorello, Jose L Prieto, Auni Somero, Tuguldur Sukhbold, Junbo Zhang, Katie Auchettl, Thomas G Brink, JS Brown, Ping Chen, A Fiore, Dirk Grupe, TW-S Holoien

2021-03-31

ASASSN-18am/SN 2018gk is a newly discovered member of the rare group of luminous, hydrogen-rich supernovae (SNe) with a peak absol..

The SAMI Galaxy Survey: the third and final data release

Scott M Croom, Matt S Owers, Nicholas Scott, Henry Poetrodjojo, Brent Groves, Jesse van de Sande, Tania M Barone, Luca Cortese, Francesco D'Eugenio, Joss Bland-Hawthorn, Julia Bryant, Sree Oh, Sarah Brough, James Agostino, Sarah Casura, Barbara Catinella, Matthew Colless, Gerald Cecil, Roger L Davies, Michael J Drinkwater

2021-02-27

We have entered a new era where integral-field spectroscopic surveys of galaxies are sufficiently large to adequately sample large..

Dual polarization measurements of MWA beampatterns at 137 MHz

A Chokshi, JLB Line, N Barry, D Ung, D Kenney, A McPhail, A Williams, RL Webster

2021-02-07

The wide adoption of low-frequency radio interferometers as a tool for deeper and higher resolution astronomical observations has ..

An Improved Measurement of the Secondary Cosmic Microwave Background Anisotropies from the SPT-SZ plus SPTpol Surveys

CL Reichardt, S Patil, PAR Ade, AJ Anderson, JE Austermann, JS Avva, E Baxter, JA Beall, AN Bender, BA Benson, F Bianchini, LE Bleem, JE Carlstrom, CL Chang, P Chaubal, HC Chiang, TL Chou, R Citron, C Corbett Moran, TM Crawford

2021-02-01

We report new measurements of millimeter-wave power spectra in the angular multipole range 2000 ≤ ℓ ≤ 11,000 (angular scales 5′ ≳ ..

Exploring reionization and high-z galaxy observables with recent multiredshift MWA upper limits on the 21-cm signal

Bradley Greig, Cathryn M Trott, Nichole Barry, Simon J Mutch, Bart Pindor, Rachel L Webster, J Stuart B Wyithe

2021-02-01

We use the latest multiredshift (z = 6.5-8.7) upper limits on the 21-cm signal from the Murchison Widefield Array (MWA) to explore..

Interpreting LOFAR 21-cm signal upper limits at z approximate to 9.1 in the context of high-z galaxy and reionization observations

Bradley Greig, Andrei Mesinger, Leon VE Koopmans, Benedetta Ciardi, Garrelt Mellema, Saleem Zaroubi, Sambit K Giri, Raghunath Ghara, Abhik Ghosh, Ilian T Iliev, Florent G Mertens, Rajesh Mondal, Andre R Offringa, Vishambhar N Pandey

2021-02-01

Using the latest upper limits on the 21-cm power spectrum at z ≈ 9.1 from the Low Frequency Array (LOFAR), we explore the regions ..

Stacking redshifted 21 cm images of H II regions around high-redshift galaxies as a probe of early reionization

James E Davies, Rupert AC Croft, Tiziana Di-Matteo, Bradley Greig, Yu Feng, J Stuart B Wyithe

2021-02-01

A number of current and future experiments aim to detect the reionization of neutral hydrogen by the first stars and galaxies in t..

The Young Supernova Experiment: Survey Goals, Overview, and Operations

DO Jones, RJ Foley, G Narayan, J Hjorth, ME Huber, PD Aleo, KD Alexander, CR Angus, K Auchettl, VF Baldassare, SH Bruun, KC Chambers, D Chatterjee, DL Coppejans, DA Coulter, L DeMarchi, G Dimitriadis, MR Drout, A Engel, KD French

2021-02-01

Time-domain science has undergone a revolution over the past decade, with tens of thousands of new supernovae (SNe) discovered eac..

A tale of two sites - II. Inferring the properties of minihalo-hosted galaxies with upcoming 21-cm interferometers

Yuxiang Qin, Andrei Mesinger, Bradley Greig, Jaehong Park

2021-01-19

The first generation of galaxies is expected to form in minihaloes, accreting gas through H2 cooling, and possessing unique proper..

Spatially resolved direct method metallicity in a high-redshift analogue local galaxy: temperature structure impact on metallicity gradients

Alex J Cameron, Tiantian Yuan, Michele Trenti, David C Nicholls, Lisa J Kewley

2021-01-13

We investigate how H ii region temperature structure assumptions affect 'direct-method' spatially resolved metallicity observation..

An efficient hybrid method to produce high-resolution large-volume dark matter simulations for semi-analytic models of reionization

Yisheng Qiu, Simon J Mutch, Pascal J Elahi, Rhys JJ Poulton, Chris Power, J Stuart B Wyithe

2021-01-01

Resolving faint galaxies in large volumes is critical for accurate cosmic reionization simulations. While less demanding than hydr..

Discovery and follow-up of ASASSN-19dj: an X-ray and UV luminous TDE in an extreme post-starburst galaxy

Jason T Hinkle, TW-S Holoien, K Auchettl, BJ Shappee, JMM Neustadt, A Payne, JS Brown, CS Kochanek, KZ Stanek, MJ Graham, MA Tucker, A Do, JP Anderson, S Bose, P Chen, DA Coulter, G Dimitriadis, Subo Dong, RJ Foley, ME Huber

2021-01-01

We present observations of ASASSN-19dj, a nearby tidal disruption event (TDE) discovered in the post-starburst galaxy KUG 0810+227..

The Landscape of Galaxies Harboring Changing-look Active Galactic Nuclei in the Local Universe

Sierra A Dodd, Jamie AP Law-Smith, Katie Auchettl, Enrico Ramirez-Ruiz, Ryan J Foley

2021-01-01

We study the properties of the host galaxies of changing-look active galactic nuclei (CL AGNs) with the aim of understanding the c..

Tidal disruption events in the first billion years of a galaxy

Hugo Pfister, Jane Lixin Dai, Marta Volonteri, Katie Auchettl, Maxime Trebitsch, Enrico Ramirez-Ruiz

2021-01-01

Accretion of stars on massive black holes (MBHs) can feed MBHs and generate tidal disruption events (TDEs). We introduce a new phy..

The host galaxies of z=7 quasars: predictions from the BLUETIDES simulation

Madeline A Marshall, Yueying Ni, Tiziana Di Matteo, J Stuart B Wyithe, Stephen Wilkins, Rupert AC Croft, Jussi K Kuusisto

2020-12-01

We examine the properties of the host galaxies of z=7 quasars using the large volume, cosmological hydrodynamical simulation BLUET..

Redundant-baseline calibration of the hydrogen epoch of reionization array

Joshua S Dillon, Max Lee, Zaki S Ali, Aaron R Parsons, Naomi Orosz, Chuneeta Devi Nunhokee, Paul La Plante, Adam P Beardsley, Nicholas S Kern, Zara Abdurashidova, James E Aguirre, Paul Alexander, Yanga Balfour, Gianni Bernardi, Tashalee S Billings, Judd D Bowman, Richard F Bradley, Phil Bull, Jacob Burba, Steve Carey

2020-11-07

In 21-cm cosmology, precision calibration is key to the separation of the neutral hydrogen signal from very bright but spectrally ..

The impact of tandem redundant/sky-based calibration in MWA Phase II data analysis

Zheng Zhang, Jonathan C Pober, Wenyang Li, Bryna J Hazelton, Miguel F Morales, Cathryn M Trott, Christopher H Jordan, Ronniy C Joseph, Adam Beardsley, Nichole Barry, Ruby Byrne, Steven J Tingay, Aman Chokshi, Kenji Hasegawa, Daniel C Jacobs, Adam Lanman, Jack LB Line, Christene Lynch, Benjamin McKinley, Daniel A Mitchell

2020-11-04

Precise instrumental calibration is of crucial importance to 21-cm cosmology experiments. The Murchison Widefield Array’s (MWA) Ph..

Double-peaked Balmer Emission Indicating Prompt Accretion Disk Formation in an X-Ray Faint Tidal Disruption Event

Tiara Hung, Ryan J Foley, Enrico Ramirez-Ruiz, Jane L Dai, Katie Auchettl, Charles D Kilpatrick, Brenna Mockler, Jonathan S Brown, David A Coulter, Georgios Dimitriadis, Thomas W-S Holoien, Jamie AP Law-Smith, Anthony L Piro, Armin Rest, Cesar Rojas-Bravo, Matthew R Siebert

2020-11-01

We present the multiwavelength analysis of the tidal disruption event (TDE) AT 2018hyz (ASASSN-18zj). From follow-up optical spect..

Reionization inference from the CMB optical depth and E-mode polarization power spectra

Yuxiang Qin, Vivian Poulin, Andrei Mesinger, Bradley Greig, Steven Murray, Jaehong Park

2020-11-01

The Epoch of Reionization (EoR) depends on the complex astrophysics governing the birth and evolution of the first galaxies and st..

Spatially Resolved Study of Recombining Plasma in W49B Using XMM-Newton

Tyler Holland-Ashford, Laura A Lopez, Katie Auchettl

2020-11-01

W49B is the youngest supernova remnant (SNR) to date that exhibits recombining plasma. The two prevailing theories of this overion..

SuperBoRG: Exploration of Point Sources at z similar to 8 in HST Parallel Fields

T Morishita, M Stiavelli, M Trenti, T Treu, GW Roberts-Borsani, CA Mason, T Hashimoto, L Bradley, D Coe, Y Ishikawa

2020-11-01

To extend the search for quasars in the epoch of reionization beyond the tip of the luminosity function, we explore point-source c..

Quantifying excess power from radio frequency interference in Epoch of Reionization measurements

Michael J Wilensky, Nichole Barry, Miguel F Morales, Bryna J Hazelton, Ruby Byrne

2020-10-01

We quantify the effect of radio frequency interference (RFI) on measurements of the 21-cm power spectrum during the Epoch of Reion..

Limits to Rest-frame Ultraviolet Emission from Far-infrared-luminous z similar or equal to 6 Quasar Hosts

MA Marshall, M Mechtley, RA Windhorst, SH Cohen, RA Jansen, L Jiang, VR Jones, JSB Wyithe, X Fan, NP Hathi, K Jahnke, WC Keel, AM Koekemoer, V Marian, K Ren, J Robinson, HJA Rottgering, RE Ryan, E Scannapieco, DP Schneider

2020-08-27

We report on a Hubble Space Telescope search for rest-frame ultraviolet emission from the host galaxies of five far-infrared-lumin..

K-CLASH: Strangulation and ram pressure stripping in galaxy cluster members at 0.3 < z < 0.6

Sam P Vaughan, Alfred L Tiley, Roger L Davies, Laura J Prichard, Scott M Croom, Martin Bureau, John P Stott, Andrew Bunker, Michele Cappellari, Behzad Ansarinejad, Matt J Jarvis

2020-08-01

Galaxy clusters have long been theorized to quench the star formation of their members. This study uses integral-field unit observ..

The Rise and Fall of ASASSN-18pg: Following a TDE from Early to Late Times

Thomas W-S Holoien, Katie Auchettl, Michael A Tucker, Benjamin J Shappee, Shannon G Patel, James CA Miller-Jones, Brenna Mockler, Daniel N Groenewald, Jason T Hinkle, Jonathan S Brown, Christopher S Kochanek, KZ Stanek, Ping Chen, Subo Dong, Jose L Prieto, Todd A Thompson, Rachael L Beaton, Thomas Connor, Philip S Cowperthwaite, Linnea Dahmen

2020-08-01

We present nearly 500 days of observations of the tidal disruption event (TDE) ASASSN-18pg, spanning from 54 days before peak ligh..

Broad-line type Ic SN 2020bvc: Signatures of an off-axis gamma-ray burst afterglow

L Izzo, K Auchettl, J Hjorth, F De Colle, C Gall, CR Angus, S Raimundo, E Ramirez-Ruiz

2020-07-21

Long-duration gamma-ray bursts (GRBs) are almost unequivocally associated with very energetic, broad-line supernovae of Type Ic-BL..

WALLABY - an SKA Pathfinder Hi survey

Barbel S Koribalski, L Staveley-Smith, T Westmeier, P Serra, K Spekkens, O Wong, K Lee-Waddell, CDP Lagos, D Obreschkow, E Ryan-Weber, M Zwaan, V Kilborn, G Bekiaris, K Bekki, F Bigiel, A Boselli, A Bosma, B Catinella, G Chauhan, ME Cluver

2020-07-13

The Widefield ASKAP L-band Legacy All-sky Blind surveY (wallaby) is a next-generation survey of neutral hydrogen (H i) in the Loca..

Foreground modelling via Gaussian process regression: An application to HERA data

A Ghosh, F Mertens, G Bernardi, MG Santos, NS Kern, CL Carilli, TL Grobler, LVE Koopmans, DC Jacobs, A Liu, AR Parsons, MF Morales, JE Aguirre, JS Dillon, BJ Hazelton, OM Smirnov, BK Gehlot, S Matika, P Alexander, ZS Ali

2020-07-01

The key challenge in the observation of the redshifted 21-cm signal from cosmic reionization is its separation from the much brigh..

Measuring HERA's Primary Beam in Situ: Methodology and First Results

CD Nunhokee, AR Parsons, NS Kern, B Nikolic, JC Pober, G Bernardi, CL Carilli, Z Abdurashidova, JE Aguirre, P Alexander, ZS Ali, Y Balfour, AP Beardsley, TS Billings, JD Bowman, RF Bradley, J Burba, C Cheng, DR Deboer, M Dexter

2020-07-01

The central challenge in 21 cm cosmology is isolating the cosmological signal from bright foregrounds. Many separation techniques ..

A tale of two sites - I. Inferring the properties of minihalo-hosted galaxies from current observations

Yuxiang Qin, Andrei Mesinger, Jaehong Park, Bradley Greig, Julian B Munoz

2020-06-01

The very first galaxies that started the cosmic dawn likely resided in so-called ‘minihaloes’, with masses of ∼105–108 M☉, accreti..

One star, two stars, or both? Investigating metallicity-dependent models for gamma-ray burst progenitors with the IllustrisTNG simulation

Benjamin Metha, Michele Trenti

2020-06-01

The rate of long-duration gamma-ray bursts (GRBs) has been identified as a potential proxy for the star formation rate (SFR) acros..

Stochastic Processes as the Origin of the Double Power-law Shape of the Quasar Luminosity Function

Keven Ren, Michele Trenti, Tiziana Di Matteo

2020-05-14

The quasar luminosity function (QLF) offers insight into the early coevolution of black holes and galaxies. It has been characteri..

Dark-ages reionization and galaxy formation simulation - XVIII. The high-redshift evolution of black holes and their host galaxies

Madeline A Marshall, Simon J Mutch, Yuxiang Qin, Gregory B Poole, J Stuart B Wyithe

2020-05-01

Correlations between black holes and their host galaxies provide insight into what drives black hole-host co-evolution. We use the..

Examining a Peak-luminosity/Decline-rate Relationship for Tidal Disruption Events

Jason T Hinkle, Thomas W-S Holoien, Benjamin J Shappee, Katie Auchettl, Christopher S Kochanek, KZ Stanek, Anna V Payne, Todd A Thompson

2020-05-01

We compare the luminosity, radius, and temperature evolution of the UV/optical blackbodies for 21 well-observed tidal disruption e..

Deep multiredshift limits on Epoch of Reionization 21 cm power spectra from four seasons of Murchison Widefield Array observations

Cathryn M Trott, CH Jordan, S Midgley, N Barry, B Greig, B Pindor, JH Cook, G Sleap, SJ Tingay, D Ung, P Hancock, A Williams, J Bowman, R Byrne, A Chokshi, BJ Hazelton, K Hasegawa, D Jacobs, RC Joseph, W Li

2020-04-01

We compute the spherically averaged power spectrum from four seasons of data obtained for the Epoch of Reionization (EoR) project ..

The Impact of Realistic Foreground and Instrument Models on 21 cm Epoch of Reionization Experiments

A Nasirudin, SG Murray, CM Trott, B Greig, RC Joseph, C Power

2020-04-01

Predictions for the ability of 21 cm interferometric experiments to discriminate Epoch of Reionization (EoR) signal models are typ..

Absolute Calibration Strategies for the Hydrogen Epoch of Reionization Array and Their Impact on the 21 cm Power Spectrum

NS Kern, JS Dillon, AR Parsons, CL Carilli, G Bernardi, Z Abdurashidova, JE Aguirre, P Alexander, ZS Ali, Y Balfour, AP Beardsley, TS Billings, JD Bowman, RF Bradley, P Bull, J Burba, S Carey, C Cheng, DR Deboer, M Dexter

2020-02-20

We discuss absolute calibration strategies for Phase I of the Hydrogen Epoch of Reionization Array (HERA), which aims to measure t..

Mitigating Internal Instrument Coupling for 21 cm Cosmology. II. A Method Demonstration with the Hydrogen Epoch of Reionization Array

NS Kern, AR Parsons, JS Dillon, AE Lanman, A Liu, P Bull, A Ewall-Wice, Z Abdurashidova, JE Aguirre, P Alexander, ZS Ali, Y Balfour, AP Beardsley, G Bernardi, JD Bowman, RF Bradley, J Burba, CL Carilli, C Cheng, DR Deboer

2020-01-10

We present a study of internal reflection and cross-coupling systematics in Phase I of the Hydrogen Epoch of Reionization Array (H..

Modelling and peeling extended sources with shapelets: A Fornax A case study

JLB Line, DA Mitchell, B Pindor, JL Riding, B McKinley, RL Webster, CM Trott, N Hurley-Walker, AR Offringa

2020-01-01

To make a power spectrum (PS) detection of the 21-cm signal from the Epoch of Reionisation (EoR), one must avoid/subtract bright f..

Reionization and cosmic dawn astrophysics from the Square Kilometre Array: impact of observing strategies

Bradley Greig, Andrei Mesinger, Leon VE Koopmans

2020-01-01

Interferometry of the cosmic 21-cm signal is set to revolutionize our understanding of the epoch of reionization (EoR) and the cos..

First Season MWA Phase II Epoch of Reionization Power Spectrum Results at Redshift 7

W Li, JC Pober, N Barry, BJ Hazelton, MF Morales, CM Trott, A Lanman, M Wilensky, I Sullivan, AP Beardsley, T Booler, JD Bowman, R Byrne, B Crosse, D Emrich, TMO Franzen, K Hasegawa, L Horsley, M Johnston-Hollitt, DC Jacobs

2019-12-20

The compact configuration of Phase II of the Murchison Widefield Array (MWA) consists of both a redundant subarray and pseudo-rand..

Absolving the SSINS of Precision Interferometric Radio Data: A New Technique for Mitigating Faint Radio Frequency Interference

Michael J Wilensky, Miguel F Morales, Bryna J Hazelton, Nichole Barry, Ruby Byrne, Sumit Roy

2019-11-01

We introduce a new pipeline for analyzing and mitigating radio frequency interference (RFI), which we call Sky-Subtracted Incohere..

Improving the Epoch of Reionization Power Spectrum Results from Murchison Widefield Array Season 1 Observations

N Barry, M Wilensky, CM Trott, B Pindor, AP Beardsley, BJ Hazelton, IS Sullivan, MF Morales, JC Pober, J Line, B Greig, R Byrne, A Lanman, W Li, CH Jordan, RC Joseph, B McKinley, M Rahimi, S Yoshiura, JD Bowman

2019-10-10

Measurements of 21 cm Epoch of Reionization (EoR) structure are subject to systematics originating from both the analysis and the ..

Dark-age reionization and galaxy formation simulation - XIX. Predictions of infrared excess and cosmic star formation rate density from UV observations

Yisheng Qiu, Simon J Mutch, Elisabete da Cunha, Gregory B Poole, J Stuart B Wyithe

2019-10-01

We present a new analysis of high-redshift UV observations using a semi-analytic galaxy formation model, and provide self-consiste..

Dark-ages reionization and galaxy formation simulation - XVI. The thermal memory of reionization

James E Davies, Simon J Mutch, Yuxiang Qin, Andrei Mesinger, Gregory B Poole, J Stuart B Wyithe

2019-10-01

Intergalactic medium temperature is a powerful probe of the epoch of reionization, as information is retained long after reionizat..

Prospects for Extending the Mass-Metallicity Relation to Low Mass at High Redshift: A Case Study at z similar to 1

Alex J Cameron, Tucker Jones, Tiantian Yuan, Michele Trenti, Stephanie Bernard, Alaina Henry, Austin Hoag, Benedetta Vulcani

2019-09-10

We report J-band MOSFIRE spectroscopy of a low-mass () star-forming galaxy at z = 0.997 showing the detection of [N ii] and [S ii]..

Dark-ages reionization and galaxy formation simulation - XVII. Sizes, angular momenta, and morphologies of high-redshift galaxies

Madeline A Marshall, Simon J Mutch, Yuxiang Qin, Gregory B Poole, J Stuart B Wyithe

2019-09-01

We study the sizes, angular momenta, and morphologies of high-redshift galaxies, using an update of the MERAXES semi-analytic gala..

Optimizing sparse RFI prediction using deep learning

Joshua Kerrigan, Paul La Plante, Saul Kohn, Jonathan C Pober, James Aguirre, Zara Abdurashidova, Paul Alexander, Zaki S Ali, Yanga Balfour, Adam P Beardsley, Gianni Bernardi, Judd D Bowman, Richard F Bradley, Jacob Burba, Chris L Carilli, Carina Cheng, David R DeBoer, Matt Dexter, Eloy de Lera Acedo, Joshua S Dillon

2019-09-01

Radio frequency interference (RFI) is an ever-present limiting factor among radio telescopes even in the most remote observing loc..

The HERA-19 Commissioning Array: Direction-dependent Effects

SA Kohn, JE Aguirre, P La Plante, TS Billings, PM Chichura, AF Fortino, AS Igarashi, RK Benefo, S Gallardo, ZE Martinot, CD Nunhokee, NS Kern, P Bull, A Liu, P Alexander, ZS Ali, AP Beardsley, G Bernardi, JD Bowman, RF Bradley

2019-09-01

Foreground power dominates the measurements of interferometers that seek a statistical detection of highly-redshifted H i emission..

Dark-ages Reionization and Galaxy Formation Simulation - XV. Stellar evolution and feedback in dwarf galaxies at high redshift

Yuxiang Qin, Alan R Duffy, Simon J Mutch, Gregory B Poole, Andrei Mesinger, J Stuart B Wyithe

2019-08-01

We directly compare predictions of dwarf galaxy properties in a semi-analytic model (SAM) with those extracted from a high-resolut..

Robust statistics towards detection of the 21 cm signal from the Epoch of Reionization

Cathryn M Trott, Shih Ching Fu, SG Murray, CH Jordan, JLB Line, N Barry, R Byrne, BJ Hazelton, K Hasegawa, R Joseph, T Kaneuji, K Kubota, W Li, C Lynch, B McKinley, DA Mitchell, MF Morales, B Pindor, JC Pober, M Rahimi

2019-07-01

We explore methods for robust estimation of the 21 cm signal from the Epoch of Reionization (EoR). A Kernel Density Estimator (KDE..

The Brightest Galaxies at Cosmic Dawn from Scatter in the Galaxy Luminosity versus Halo Mass Relation

Keven Ren, Michele Trenti, Charlotte A Mason

2019-06-20

The Ultraviolet Luminosity Function (UVLF) is a key observable for understanding galaxy formation from cosmic dawn. There has been..

Constraining the Neutral Fraction of Hydrogen in the IGM at Redshift 7.5

A Hoag, M Bradac, K Huang, C Mason, T Treu, KB Schmidt, M Trenti, V Strait, BC Lemaux, EQ Finney, M Paddock

2019-06-10

We present a large spectroscopic campaign with Keck/Multi-Object Spectrometer for InfraRed Exploration (MOSFIRE) targeting Lyα emi..

Massive Dead Galaxies at z similar to 2 with HST Grism Spectroscopy. I. Star Formation Histories and Metallicity Enrichment

T Morishita, LE Abramson, T Treu, GB Brammer, T Jones, P Kelly, M Stiavelli, M Trenti, B Vulcani, X Wang

2019-06-01

Observations have revealed massive (log M∗/Mo ≳ 11) galaxies that were already dead when the universe was only ∼2 Gyr. Given the s..

Model Dispersion with PRISM: An Alternative to MCMC for Rapid Analysis of Models

Ellert van der Velden, Alan R Duffy, Darren Croton, Simon J Mutch, Manodeep Sinha

2019-06-01

We have built PRISM, a Probabilistic Regression Instrument for Simulating Models. PRISM uses the Bayes linear approach and history..

The first supermassive black holes: indications from models for future observations

Stergios Amarantidis, Jose Afonso, Hugo Messias, Bruno Henriques, Andrew Griffin, Cedric Lacey, Claudia del P Lagos, Violeta Gonzalez-Perez, Yohan Dubois, Marta Volonteri, Israel Matute, Ciro Pappalardo, Yuxiang Qin, Ranga-Ram Chary, Ray P Norris

2019-05-01

We present an exploration of the expected detection of the earliest active galactic nuclei (AGNs) in the Universe from state-of-ar..

Fundamental Limitations on the Calibration of Redundant 21 cm Cosmology Instruments and Implications for HERA and the SKA

Ruby Byrne, Miguel F Morales, Bryna Hazelton, Wenyang Li, Nichole Barry, Adam P Beardsley, Ronniy Joseph, Jonathan Pober, Ian Sullivan, Cathryn Trott

2019-04-10

Precise instrument calibration is critical to the success of 21 cm cosmology experiments. Unmitigated errors in calibration contam..

Constraints on reionization from the z=7.5 QSO ULASJ1342 0928

Bradley Greig, Andrei Mesinger, Eduardo Banados

2019-04-01

The recent detection of ULASJ1342+0928, a bright QSO at z = 7.54, provides a powerful probe of the ionization state of the interve..

Deep learning from 21-cm tomography of the cosmic dawn and reionization

Nicolas Gillet, Andrei Mesinger, Bradley Greig, Adrian Liu, Graziano Ucci

2019-03-01

Inferring the astrophysics of reionization and cosmic dawn from galaxy luminosity functions and the 21-cm signal

Jaehong Park, Andrei Mesinger, Bradley Greig, Nicolas Gillet

2019-03-01

The properties of the first galaxies, expected to drive the Cosmic Dawn and the Epoch of Reionization, are encoded in the 3D struc..

The neutral hydrogen properties of galaxies in gas-rich groups

Robert Dzudzar, Virginia Kilborn, Gerhardt Meurer, Sarah M Sweet, Michael Drinkwater, Kenji Bekki, Fiona Audcent-Ross, Baerbel Koribalski, Ji Hoon Kim, Mary Putman, Emma Ryan-Weber, Martin Zwaan, Joss Bland-Hawthorn, Michael Dopita, Marianne T Doyle-Pegg, Ed Elson, Kenneth Freeman, Dan Hanish, Tim Heckman, Robert Kennicutt

2019-03-01

We present an analysis of the integrated neutral hydrogen (H i) properties for 27 galaxies within nine low-mass, gas-rich, late-ty..

Observational determination of the galaxy bias from cosmic variance with a random pointing survey: clustering of z similar to 2 galaxies from Hubble's BoRG survey

Alex J Cameron, Michele Trenti, Rachael C Livermore, Cameron van der Velden

2019-02-01

Gravitational clustering broadens the count-in-cells distribution of galaxies for surveys along uncorrelated (well-separated) line..

Gridded and direct Epoch of Reionisation bispectrum estimates using the Murchison Widefield Array

Cathryn M Trott, Catherine A Watkinson, Christopher H Jordan, Shintaro Yoshiura, Suman Majumdar, N Barry, R Byrne, BJ Hazelton, K Hasegawa, R Joseph, T Kaneuji, K Kubota, W Li, J Line, C Lynch, B McKinley, DA Mitchell, MF Morales, S Murray, B Pindor

2019-01-01

We apply two methods to estimate the 21-cm bispectrum from data taken within the Epoch of Reionisation (EoR) project of the Murchi..

KROSS-SAMI: a direct IFS comparison of the Tully-Fisher relation across 8 Gyr since z approximate to 1

AL Tiley, M Bureau, L Cortese, CM Harrison, HL Johnson, JP Stott, AM Swinbank, I Smail, D Sobral, AJ Bunker, K Glazebrook, RG Bower, D Obreschkow, JJ Bryant, MJ Jarvis, J Bland-Hawthorn, G Magdis, AM Medling, SM Sweet, C Tonini

2019-01-01

We construct Tully-Fisher relations (TFRs), from large samples of galaxies with spatially resolved H α emission maps from the K-ba..

Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the Kepler 2 Observations

W Li, X Wang, J Vinko, J Mo, G Hosseinzadeh, DJ Sand, J Zhang, H Lin, T Zhang, L Wang, J Zhang, Z Chen, D Xiang, L Rui, F Huang, X Li, X Zhang, L Li, E Baron, JM Derkacy

2019-01-01

Supernova (SN) 2018oh (ASASSN-18bt) is the first spectroscopically confirmed Type Ia supernova (SN Ia) observed in the Kepler fiel..

Seeing Double: ASASSN-18bt Exhibits a Two-component Rise in the Early-time K2 Light

BJ Shappee, TW-S Holoien, MR Drout, K Auchettl, MD Stritzinger, CS Kochanek, KZ Stanek, E Shaya, G Narayan, JS Brown, S Bose, D Bersier, J Brimacombe, Ping Chen, Subo Dong, S Holmbo, B Katz, JA Munoz, RL Mutel, RS Post

2019-01-01

On 2018 February 4.41, the All-Sky Automated Survey for SuperNovae (ASAS-SN) discovered ASASSN-18bt in the K2 Campaign 16 field. W..

The FHD/epsilon ppsilon Epoch of Reionisation power spectrum pipeline

N Barry, AP Beardsley, R Byrne, B Hazelton, MF Morales, JC Pober, I Sullivan

2019-01-01

Epoch of Reionisation (EoR) data analysis requires unprecedented levels of accuracy in radio interferometer pipelines. We have dev..

Dependence of galaxy clustering on UV luminosity and stellar mass at z similar to 4-7

Yisheng Qiu, J Stuart B Wyithe, Pascal A Oesch, Simon J Mutch, Yuxiang Qin, Ivo Labbe, Rychard J Bouwens, Mauro Stefanon, Garth D Illingworth

2018-12-01

We investigate the dependence of galaxy clustering at z ~ 4-7 on UV luminosity and stellar mass. Our sample consists of ~10 000 Ly..

Measuring the global 21-cm signal with the MWA-I: improved measurements of the Galactic synchrotron background using lunar occultation

B McKinley, G Bernardi, CM Trott, JLB Line, RB Wayth, AR Offringa, B Pindor, CH Jordan, M Sokolowski, SJ Tingay, E Lenc, N Hurley-Walker, JD Bowman, F Briggs, RL Webster

2018-12-01

We present early results from a project to measure the sky-averaged (global), redshifted 21 cm signal from the Epoch of Reionizati..

The Phase II Murchison Widefield Array: Design overview

Randall B Wayth, Steven J Tingay, Cathryn M Trott, David Emrich, Melanie Johnston-Hollitt, Ben McKinley, BM Gaensler, AP Beardsley, T Booler, B Crosse, TMO Franzen, L Horsley, DL Kaplan, D Kenney, MF Morales, D Pallot, G Sleap, K Steele, M Walker, A Williams

2018-11-23

We describe the motivation and design details of the 'Phase II' upgrade of the Murchison Widefield Array radio telescope. The expa..

The Bright-end Galaxy Candidates at z similar to 9 from 79 Independent HST Fields

T Morishita, M Trenti, M Stiavelli, LD Bradley, D Coe, PA Oesch, CA Mason, JS Bridge, BW Holwerda, RC Livermore, B Salmon, KB Schmidt, JM Shull, T Treu

2018-11-10

We present a full data analysis of the pure-parallel Hubble Space Telescope (HST) imaging observations in the Brightest of Reioniz..

Assessment of Ionospheric Activity Tolerances for Epoch of Reionization Science with the Murchison Widefield Array

Cathryn M Trott, CH Jordan, SG Murray, B Pindor, DA Mitchell, RB Wayth, J Line, B McKinley, A Beardsley, J Bowman, F Briggs, BJ Hazelton, J Hewitt, D Jacobs, MF Morales, JC Pober, S Sethi, U Shankar, R Subrahmanyan, M Tegmark

2018-11-01

Structure imprinted in foreground extragalactic point sources by ionospheric refraction has the potential to contaminate Epoch of ..

A multifrequency radio continuum study of the Magellanic Clouds - I. Overall structure and star formation rates

B-Q For, L Staveley-Smith, N Hurley-Walker, T Franzen, AD Kapinska, MD Filipovic, JD Collier, C Wu, K Grieve, JR Callingham, ME Bell, G Bernardi, JD Bowman, F Briggs, RJ Cappallo, AA Deshpande, KS Dwarakanath, BM Gaensler, LJ Greenhill, P Hancock

2018-10-01

We present the first low-frequency Murchison Widefield Array (MWA) radio continuum maps of the Magellanic Clouds (MCs), using mosa..

Results from EDGES High-band. II. Constraints on Parameters of Early Galaxies

Raul A Monsalve, Bradley Greig, Judd D Bowman, Andrei Mesinger, Alan EE Rogers, Thomas J Mozdzen, Nicholas S Kern, Nivedita Mahesh

2018-08-10

We use the sky-average spectrum measured by EDGES High-band (90-190 MHz) to constrain parameters of early galaxies independent of ..

HST Follow-up Observations of Two Bright z similar to 8 Candidate Galaxies from the BoRG Pure-parallel Survey

RC Livermore, M Trenti, LD Bradley, SR Bernard, BW Holwerda, CA Mason, T Treu

2018-07-10

We present follow-up imaging of two bright (L > L∗) galaxy candidates at z ≳ 8 from the Brightest of Reionizing Galaxies (BoRG) su..

21CMMC with a 3D light-cone: the impact of the co-evolution approximation on the astrophysics of reionization and cosmic dawn

Bradley Greig, Andrei Mesinger

2018-07-01

We extend 21CMMC, a Monte Carlo Markov Chain sampler of 3D reionization simulations, to perform parameter estimation directly on 3..

Dark-ages Reionization and Galaxy Formation Simulation - XIV. Gas accretion, cooling, and star formation in dwarf galaxies at high redshift

Yuxiang Qin, Alan R Duffy, Simon J Mutch, Gregory B Poole, Paul M Geil, Andrei Mesinger, J Stuart B Wyithe

2018-06-01

We study dwarf galaxy formation at high redshift (z ≥ 5) using a suite of high-resolution, cosmological hydrodynamic simulations a..

Beacons into the Cosmic Dark Ages: Boosted Transmission of Ly alpha from UV Bright Galaxies at z greater than or similar to 7

Charlotte A Mason, Tommaso Treu, Stephane de Barros, Mark Dijkstra, Adriano Fontana, Andrei Mesinger, Laura Pentericci, Michele Trenti, Eros Vanzella

2018-04-20

Recent detections of Lyman alpha (Lyα) emission from z > 7.5 galaxies were somewhat unexpected given a dearth of previous non-dete..

The Cosmic Web around the Brightest Galaxies during the Epoch of Reionization

Keven Ren, Michele Trenti, Simon J Mutch

2018-03-20

The most luminous galaxies at high redshift are generally considered to be hosted in massive dark-matter halos of comparable numbe..

The Universe Is Reionizing at z similar to 7: Bayesian Inference of the IGM Neutral Fraction Using Ly alpha Emission from Galaxies

Charlotte A Mason, Tommaso Treu, Mark Dijkstra, Andrei Mesinger, Michele Trenti, Laura Pentericci, Stephane de Barros, Eros Vanzella

2018-03-20

We present a new flexible Bayesian framework for directly inferring the fraction of neutral hydrogen in the intergalactic medium (..

Multi-messenger Observations of a Binary Neutron Star Merger

BP Abbott, R Abbott, TD Abbott, F Acernese, K Ackley, C Adams, T Adams, P Addesso, RX Adhikari, VB Adya, C Affeldt, M Afrough, B Agarwal, M Agathos, K Agatsuma, N Aggarwal, OD Aguiar, L Aiello, A Ain, P Ajith

2017-10-20

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observ..