Journal
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS
Volume 46, Issue 12, Pages 783-811Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063773720120014
Keywords
gamma-ray bursts; precursor; afterglow; supernova; photometry; multicolor observations
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Funding
- Russian Foundation for Basic Research [17-52-80139]
- Russian Science Foundation [18-12-00522]
- Aerospace Committee of the Ministry of Digital Development, Innovations, and Aerospace Industry of Kazakhstan [BR 05336383]
- Shota Rustaveli Science Foundation [RF-18-1193]
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Multicolor photometric observations in the optical band and a comprehensive study in the X-ray, gamma-ray, and radio bands are presented for GRB 181201A and its afterglow. The optical observations began similar to 0.5 day after the burst and lasted almost continuously for similar to 24 days. They were resumed after eight months, which allowed us to determine the contribution of the host galaxy to the measured fluxes and to estimate the related extinction. Such complete coverage of the light curve became possible owing to the coordinated work of a network of nine telescopes worldwide. Convincing evidence of an incipient supernova explosion at the location of the burst source was obtained at the end of the first series of observations. Thus, GRB 181201A became yet another event that confirmed the association of gamma-ray bursts with supernovae. Thirty such events based on photometric observations of burst afterglows were known before it. A comparison of the supernova-induced excess emission in the light curve of the afterglow from GRB 181201A with other events has allowed some of the supernova parameters to be determined.
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