GRB 201015A: from seconds to months of optical monitoring and supernova discovery
Belkin S. Pozanenko A.S. Minaev P.Y. Pankov N.S. Volnova A.A. Rossi A. Stratta G. Benetti S. Palazzi E. Moskvitin A.S. Burhonov O. Rumyantsev V.V. Klunko E.V. Inasaridze R.Ya. Reva I.V. Kim V. Jelinek M. Kann D.A. Volvach A.E. Volvach L.N. Xu D. Zhu Z. Fu S. Mkrtchyan A.A.
1 February 2024Oxford University Press
Monthly Notices of the Royal Astronomical Society
2024#527Issue 411507 - 11520 pp.
We present full photometric coverage and spectroscopic data for soft gamma-ray burst GRB 201015A with a redshift z = 0.426. Our data span a time range of 85 d following the detection of GRB. These observations revealed an underlying supernova SN 201015A with a maximum at 8.54 ± 1.48 d (rest frame) and an optical peak absolute magnitude -19.45+0.85-0.47 mag. The SN stands out clearly, since the contribution of the afterglow at this time is not dominant, which made it possible to determine SN’s parameters. A comparison of these parameters reveals that the SN 201015A is the earliest (the minimum Tmax) known SN associated with GRBs. Spectroscopic observations during the SN decay stage showed broad lines, indicating a large photospheric velocity, and identified this SN as a Type Ic-BL. Thus, the SN 201015A associated with the GRB 201015A becomes the 27th SN/GRB confirmed by both photometric and spectroscopic observations. Using the results of spectral analysis based on the available data of Fermi-GBM experiment, the parameters Ep,i = 20.0 ± 8.5 keV and Eiso = (1.1 ± 0.2) × 1050 erg were obtained. According to the position of the burst on the Ep,i–Eiso correlation, GRB 201015A was classified as a type II (long) GRB, which was also confirmed by the T90,i–EH diagram.
gamma-ray bursts , transients: supernovae
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National Research University ‘Higher School of Economics’, Faculty of Physics, Myasnitskaya ul. 20, Moscow, 101000, Russian Federation
Space Research Institute, The Russian Academy of Sciences, Profsoyuznaya ul. 84/32, Moscow, 117997, Russian Federation
School of Physics and Astronomy, Monash University, Clayton, 3800, VIC, Australia
Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, 141701, Russian Federation
P.N. Lebedev Physical Institute, The Russian Academy of Sciences, 53 Leninsky Avenue, Moscow, 119991, Russian Federation
INAF – Osservatorio di Astrofisica e Scienza dello Spazio, via Piero Gobetti 93/3, Bologna, I-40129, Italy
Institut für Theoretische Physik, Goethe Universität, Max-von-Laue-Str 1, Frankfurt am Main, D-60438, Germany
Istituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, Roma, I-00133, Italy
INAF – Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, Padova, I-35122, Italy
Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS), Nizhnij Arkhyz, 369167, Russian Federation
Ulugh Beg Astronomical Institute (UBAI), The Uzbek Academy of Sciences, 33 Astronomicheskaya str, Tashkent, 100052, Uzbekistan
Crimean Astrophysical Observatory, Russian Academy of Sciences, Nauchnyi, 298409, Russian Federation
Institute of Solar-Terrestrial Physics, Russian Academy of Sciences, Siberian Branch, Irkutsk, 664033, Russian Federation
Evgeni Kharadze Georgian National Astrophysical Observatory, Abastumani, Adigeni, 0301, Georgia
Fesenkov Astrophysical Institute, Observatory street 23, Almaty, 050020, Kazakhstan
Pulkovo Observatory, Russian Academy of Sciences, Saint Petersburg, 196140, Russian Federation
Instituto de Astrofísica de Andalucíıa (IAA-CSIC), Apartado de Correos, 3.004, Granada, E-18.080, Spain
Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía s/n, Granada, E-18008, Spain
CAS Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China
National Research University ‘Higher School of Economics’
Space Research Institute
School of Physics and Astronomy
Institute of Physics and Technology
P.N. Lebedev Physical Institute
INAF – Osservatorio di Astrofisica e Scienza dello Spazio
Institut für Theoretische Physik
Istituto di Astrofisica e Planetologia Spaziali
INAF – Osservatorio Astronomico di Padova
Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS)
Ulugh Beg Astronomical Institute (UBAI)
Crimean Astrophysical Observatory
Institute of Solar-Terrestrial Physics
Evgeni Kharadze Georgian National Astrophysical Observatory
Fesenkov Astrophysical Institute
Pulkovo Observatory
Instituto de Astrofísica de Andalucíıa (IAA-CSIC)
Instituto de Astrofísica de Andalucía (IAA-CSIC)
CAS Key Laboratory of Space Astronomy and Technology
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