Journal article
Examining a Peak-luminosity/Decline-rate Relationship for Tidal Disruption Events
JT Hinkle, TWS Holoien, BJ Shappee, K Auchettl, CS Kochanek, KZ Stanek, AV Payne, TA Thompson
Astrophysical Journal Letters | IOP PUBLISHING LTD | Published : 2020
Abstract
We compare the luminosity, radius, and temperature evolution of the UV/optical blackbodies for 21 well-observed tidal disruption events (TDEs), 8 of which were discovered by the All-Sky Automated Survey for Supernovae. We find that the blackbody radii generally increase prior to peak and slowly decline at late times. The blackbody temperature evolution is generally flat, with a few objects showing small-scale variations. The bolometric UV/optical luminosities generally evolve smoothly and flatten out at late times. Finally, we find an apparent correlation between the peak luminosity and the decline rate of TDEs. This relationship is strongest when comparing the peak luminosity to its decline..
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Grants
Awarded by National Science Foundation
Funding Acknowledgements
We thank the Las Cumbres Observatory and its staff for its continuing support of the ASAS-SN project. ASAS-SN is supported by the Gordon and Betty Moore Foundation through grant GBMF5490 to the Ohio State University, and NSF grants AST-1515927 and AST-1908570. Development of ASAS-SN has been supported by NSF grant AST-0908816, the Mt. Cuba Astronomical Foundation, the Center for Cosmology and AstroParticle Physics at the Ohio State University, the Chinese Academy of Sciences South America Center for Astronomy (CAS- SACA), the Villum Foundation, and George Skestos.B.J.S., K.Z.S., and C.S.K. are supported by NSF grants AST-1515927, AST-1814440, and AST-1908570. B.J.S. is also supported by NSF grants AST-1920392 and AST-1911074. K.A.A. is supported by the Danish National Research Foundation (DNRF132). T.A.T. is supported in part by NASA grant 80NSSC20K0531.Parts of this research were supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013.