ARC Centre of Excellence for Gravitational Wave Discovery

Characterization of Type Ibn Supernovae

D Farias, C Gall, VA Villar, K Auchettl, KM de Soto, A Gagliano, WB Hoogendam, G Narayan, A Sedgewick, SK Yadavalli, Y Zenati, CR Angus, KW Davis, J Hjorth, WV Jacobson-Galán, DO Jones, CD Kilpatrick, MJ Bustamante Rosell, DA Coulter, G Dimitriadis

2026-04-01

<jats:p> <jats:italic>Context</jats:italic> . Type Ibn supernovae (SNe) are characterized ..

An extremely fast fading population II dwarf nova candidate: caught spectroscopically on the rise

N Van Bemmel, J Zhang, J Cooke, A Möller, AW Shafter, I Andreoni, K Auchettl, D Buckley, J Carney, D Dobie, J Freeburn, B Gendre, V Kansal, I Monageng, A Rau, N Rawat, M Suhr, EN Taylor

2026-03-01

In the first observational run of the Kilonova and Transients Programme (KNTraP), a rapidly evolving optical transient, KNTraP2022..

A Multimessenger Search for the Supermassive Black Hole Binary in 3C 66B with the Parkes Pulsar Timing Array

J Cardinal Tremblay, B Goncharov, R Van Haasteren, NDR Bhat, ZC Chen, V Di Marco, S Iguchi, A Kapur, W Ling, R Mandow, S Mishra, DJ Reardon, RM Shannon, H Sudou, J Wang, SY Zhao, XJ Zhu, A Zic

2026-02-20

A subparsec supermassive black hole binary (SMBHB) at the center of the galaxy 3C 66B is a promising candidate for continuous grav..

SN 2022acko and the Properties of Its Red Supergiant Progenitor: Direct Detection, Light Curves, and Nebular Spectroscopy

G Teixeira, CD Kilpatrick, CR Bom, A Santos, P Darc, K Auchettl, Á Álvarez-Candal, RJ Foley, PK Humire, AL Piro, C Rojas-Bravo, C Mendes de Oliveira, A Kanaan, T Ribeiro, W Schoenell

2026-02-10

<jats:title>Abstract</jats:title> <jats:p> We present ultraviolet, optical, and infrared obs..

Measuring the crust-superfluid coupling time-scale for 105 UTMOST pulsars with a Kalman filter

W Dong, A Melatos, NJ O'Neill, PM Meyers, DK Boek

2026-02-01

Crust-superfluid coupling plays an important role in neutron star rotation, particularly with respect to timing noise and glitches..

Pan-STARRS Follow-up of the Gravitational-wave Event S250818k and the Light Curve of SN2025ulz

JH Gillanders, ME Huber, M Nicholl, SJ Smartt, KW Smith, KC Chambers, DR Young, JW Tweddle, S Srivastav, MD Fulton, F Stoppa, GSH Paek, A Aamer, MR Alarcon, A Andersson, A Aryan, K Auchettl, TW Chen, T de Boer, AKH Kong

2025-12-10

Kilonovae are the scientifically rich—but observationally elusive—optical transient phenomena associated with compact binary merge..

A Panchromatic View of Late-time Shock Power in the Type II Supernova 2023ixf

WV Jacobson-Galán, L Dessart, CD Kilpatrick, PJ Patel, K Auchettl, S Tinyanont, R Margutti, VV Dwarkadas, KA Bostroem, R Chornock, RJ Foley, H Abunemeh, T Ahumada, P Arunachalam, MJ Bustamante-Rosell, DA Coulter, C Gall, H Gao, X Guo, DO Jones

2025-11-20

We present multiwavelength observations of the Type II supernova (SN II) 2023ixf during its first 2 yr of evolution. We combine gr..

Luminosity Distance Dispersion in Swiss-cheese Cosmology as a Function of the Hole Size Distribution

T Cheunchitra, A Melatos, RL Webster

2025-11-20

<jats:title>Abstract</jats:title> <jats:p> The luminosity distance–redshift ( ..

JWST Observations of SN 2023ixf. II. The Panchromatic Evolution between 250 and 720 Days after the Explosion

K Medler, C Ashall, P Hoeflich, E Baron, JM DerKacy, M Shahbandeh, T Mera, CM Pfeffer, WB Hoogendam, DO Jones, S Shiber, E Fereidouni, OD Fox, J Jencson, L Galbany, JT Hinkle, MA Tucker, BJ Shappee, ME Huber, K Auchettl

2025-11-10

We present the nebular phase spectroscopic and photometric observations of the nearby hydrogen-rich core-collapse supernova (CCSN)..

Dedicated-frequency analysis of gravitational-wave bursts from core-collapse supernovae with minimal assumptions

YSC Lee, MJ Szczepańczyk, T Mishra, M Millhouse, A Melatos

2025-10-30

Gravitational-wave (GW) emissions from core-collapse supernovae (CCSNe) provide insights into the internal processes leading up to..

Searching for Continuous Gravitational Waves in the Parkes Pulsar Timing Array Data Release 3

SY Zhao, ZC Chen, JC Tremblay, B Goncharov, XJ Zhu, NDR Bhat, M Curyło, S Dai, V Di Marco, H Ding, G Hobbs, A Kapur, W Ling, T Liu, R Mandow, S Mishra, DJ Reardon, CJ Russell, RM Shannon, S Wang

2025-10-20

We present results from an all-sky search for continuous gravitational waves from individual supermassive binary black holes using..

How trust networks shape students’ opinions about the proficiency of artificially intelligent assistants

Y Bu, A Melatos, R Evans

2025-10-01

The rising use of educational tools controlled by artificial intelligence (AI) has provoked a debate about their proficiency. Whil..

Rapid construction of joint pulsar timing array data sets: The Lite method

B Larsen, CMF Mingarelli, PT Baker, JS Hazboun, S Chen, L Schult, SR Taylor, J Simon, J Antoniadis, J Baier, RN Caballero, A Chalumeau, Z Chen, I Cognard, D Deb, V Di Marco, T Dolch, IO Eya, EC Ferrara, KA Gersbach

2025-10-01

The International Pulsar Timing Array (IPTA)'s second data release (IPTA DR2) combines decades of observations of 65 millisecond p..

Choosing Suitable Noise Models for Nanohertz Gravitational-wave Astrophysics

V Di Marco, A Zic, RM Shannon, E Thrane, AD Kulkarni

2025-09-01

Accurately estimating the parameters of the nanohertz gravitational-wave background is essential for understanding its origin. The..

Discerning media bias within a network of political allies: An analytic condition for disruption by partisans

J Horstman, A Melatos, F Farokhi

2025-09-01

An individual's opinion concerning political bias in the media is shaped by exogenous factors (independent analysis of media outpu..

Evidence for an Instability-induced Binary Merger in the Double-peaked, Helium-rich Type IIn Supernova 2023zkd

A Gagliano, VA Villar, T Matsumoto, DO Jones, CL Ransome, AE Nugent, D Hiramatsu, K Auchettl, D Tsuna, Y Dong, S Gomez, PD Aleo, CR Angus, T de Boer, KA Bostroem, KC Chambers, DA Coulter, KW Davis, JR Fairlamb, J Farah

2025-08-20

We present ultraviolet to infrared observations of the extraordinary Type IIn supernova 2023zkd (SN 2023zkd). Photometrically, it ..

First results from the UTMOST-NS pulsar timing programme

L Dunn, C Flynn, M Bailes, YSC Lee, G Howitt, A Melatos, V Gupta, A Mandlik, A Deller

2025-08-01

The UTMOST-NS pulsar timing programme operated at the Molonglo Observatory Synthesis Telescope from 2021 April to 2023 June, obser..

The BTSbot-nearby Discovery of SN 2024jlf: Rapid, Autonomous Follow-up Probes Interaction in an 18.5 Mpc Type IIP Supernova

N Rehemtulla, WV Jacobson-Galán, A Singh, AA Miller, CD Kilpatrick, KR Hinds, C Liu, S Schulze, J Sollerman, T Jegou du Laz, T Ahumada, K Auchettl, SJ Brennan, MW Coughlin, C Fremling, A Gangopadhyay, DA Perley, NZ Prusinski, J Purdum, YJ Qin

2025-06-01

We present observations of the Type IIP supernova (SN) SN 2024jlf, including spectroscopy beginning just 0.7 days (∼17 hr) after f..

Search for continuous gravitational waves from neutron stars in five globular clusters with a phase-tracking hidden Markov model in the third LIGO observing run

L Dunn, A Melatos, P Clearwater, S Suvorova, L Sun, W Moran, RJ Evans

2025-04-15

A search is performed for continuous gravitational waves emitted by unknown neutron stars in five nearby globular clusters using d..

Multidetector characterization of gravitational-wave burst tensor polarizations with the BayesWave algorithm

YSC Lee, S Doshi, M Millhouse, A Melatos

2025-04-01

Einstein's theory of general relativity predicts that gravitational waves (GWs) are tensor-polarized, with two modes of polarizati..

An optically led search for kilonovae to z∼0.3 with the Kilonova and Transients Programme (KNTraP)

N Van Bemmel, J Zhang, J Cooke, A Rest, A Möller, I Andreoni, K Auchettl, D Dobie, B Gendre, S Goode, J Freeburn, DO Jones, CD Kilpatrick, A Lien, A Rau, L Spitler, M Suhr, F Valdes

2025-03-01

Compact binary mergers detectable in gravitational waves can be accompanied by a kilonova, an electromagnetic transient powered by..

Searching for Gravitational-Wave Bursts from Cosmic String Cusps with the Parkes Pulsar Timing Array’s Third Data Release

Y Xia, J Wang, S Kuroyanagi, W Yan, Y Wen, A Kapur, J Zou, Y Feng, V Di Marco, S Mishra, CJ Russell, S Wang, D Zhao, X Zhu

2025-03-01

Pulsar timing arrays (PTAs) are designed to detect nanohertz-frequency gravitational waves (GWs). Since GWs are anticipated from c..

Gravitational waves from r-mode oscillations of stochastically accreting neutron stars

W Dong, A Melatos

2025-02-01

r-mode oscillations in rotating neutron stars are a source of continuous gravitational radiation. We investigate the excitation of..

GRB 220831A: a hostless, intermediate gamma-ray burst with an unusual optical afterglow

J Freeburn, B O’Connor, J Cooke, D Dobie, A Möller, N Tejos, J Zhang, P Beniamini, K Auchettl, J DeLaunay, S Dichiara, WF Fong, S Goode, A Gordon, CD Kilpatrick, A Lien, C Mihalenko, G Ryan, K Siellez, M Suhr

2025-02-01

GRB 220831A is a gamma-ray burst (GRB) with a duration and spectral peak energy that places it at the interface between the distri..

A two-minute burst of highly polarized radio emission originating from low Galactic latitude

D Dobie, A Zic, LS Oswald, J Pritchard, ME Lower, Z Wang, H Qiu, N Hurley-Walker, Y Wang, E Lenc, DL Kaplan, A Anumarlapudi, K Auchettl, M Bailes, AD Cameron, J Cooke, A Deller, LN Driessen, J Freeburn, T Murphy

2024-11-01

Several sources of repeating coherent bursts of radio emission with periods of many minutes have now been reported in the literatu..