MAGIC Observations of the Nearby Short Gamma-Ray Burst GRB 160821B * (CROSBI ID 301871)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Acciari, V. A. ; Ansoldi, S. ; Antonelli, L. A. ; Arbet Engels, A. ; Asano, K. ; Baack, D. ; Babić, Ana ; Baquero, A. ; Barres de Almeida, U. ; Barrio, J. A. ; Becerra González, J. ; Bednarek, W. ; Bellizzi, L. ; Bernardini, E. ; Bernardos, M. ; Berti, A. ; Besenrieder, J. ; Bhattacharyya, W. ; Bigongiari, C. ; Biland, A. ; Blanch, O. ; Bonnoli, G. ; Bošnjak, Željka ; Busetto, G. ; Carosi, R. ; Ceribella, G. ; Cerruti, M. ; Chai, Y. ; Chilingarian, A. ; Cikota, Stefan ; Colak, S. M. ; Colombo, E. ; Contreras, J. L. ; Cortina, J. ; Covino, S. ; D’Amico, G. ; D’Elia, V. ; Da Vela, P. ; Dazzi, F. ; Angelis, A. De ; Lotto, B. De ; Delfino, M. ; Delgado, J. ; Delgado Mendez, C. ; Depaoli, D. ; Pierro, F. Di ; Venere, L. Di ; Souto Espiñeira, E. Do ; Dominis Prester, Dijana ; Donini, A. ; Dorner, D. ; Doro, M. ; Elsaesser, D. ; Fallah Ramazani, V. ; Fattorini, A. ; Ferrara, G. ; Foffano, L. ; Fonseca, M. V. ; Font, L. ; Fruck, C. ; Fukami, S. ; García López, R. J. ; Garczarczyk, M. ; Gasparyan, S. ; Gaug, M. ; Giglietto, N. ; Giordano, F. ; Gliwny, P. ; Godinović, Nikola ; Green, J. G. ; Green, D. ; Hadasch, D. ; Hahn, A. ; Heckmann, L. ; Herrera, J. ; Hoang, J. ; Hrupec, Dario ; Hütten, M. ; Inada, T. ; Inoue, S. ; Ishio, K. ; Iwamura, Y. ; Jormanainen, J. ; Jouvin, L. ; Kajiwara, Y. ; Karjalainen, M. ; Kerszberg, D. ; Kobayashi, Y. ; Kubo, H. ; Kushida, J. ; Lamastra, A. ; Lelas, Damir ; Leone, F. ; Lindfors, E. ; Lombardi, S. ; Longo, F. ; López-Coto, R. ; López-Moya, M. ; López-Oramas, A. ; Loporchio, S. ; Machado de Oliveira Fraga, B. ; Maggio, C. ; Majumdar, P. ; Makariev, M. ; Mallamaci, M. ; Maneva, G. ; Manganaro, Marina ; Mannheim, K. ; Maraschi, L. ; Mariotti, M. ; Martínez, M. ; Mazin, D. ; Mender, S. ; Mićanović, Saša ; Miceli, D. ; Miener, T. ; Minev, M. ; Miranda, J. M. ; Mirzoyan, R. ; Molina, E. ; Moralejo, A. ; Morcuende, D. ; Moreno, V. ; Moretti, E. ; Neustroev, V. ; Nigro, C. ; Nilsson, K. ; Ninci, D. ; Nishijima, K. ; Noda, K. ; Nozaki, S. ; Ohtani, Y. ; Oka, T. ; Otero-Santos, J. ; Paiano, S. ; Palatiello, M. ; Paneque, D. ; Paoletti, R. ; Paredes, J. M. ; Pavletić, Lovro ; Peñil, P. ; Perennes, C. ; Persic, M. ; Prada Moroni, P. G. ; Prandini, E. ; Priyadarshi, C. ; Puljak, Ivica ; Rhode, W. ; Ribó, M. ; Rico, J. ; Righi, C. ; Rugliancich, A. ; Saha, L. ; Sahakyan, N. ; Saito, T. ; Sakurai, S. ; Satalecka, K. ; Saturni, F. G. ; Schleicher, B. ; Schmidt, K. ; Schweizer, T. ; Sitarek, J. ; Šnidarić, Iva ; Sobczynska, D. ; Spolon, A. ; Stamerra, A. ; Strom, D. ; Strzys, M. ; Suda, Y. ; Surić, Tihomir ; Takahashi, M. ; Tavecchio, F. ; Temnikov, P. ; Terzić, Tomislav ; Teshima, M. ; Torres-Albà, N. ; Tosti, L. ; Truzzi, S. ; Tutone, A. ; van Scherpenberg, J. ; Vanzo, G. ; Vazquez Acosta, M. ; Ventura, S. ; Verguilov, V. ; Vigorito, C. F. ; Vitale, V. ; Vovk, I. ; Will, M. ; Zarić, Darko ; Nava, L.
MAGIC Collaboration
engleski
MAGIC Observations of the Nearby Short Gamma-Ray Burst GRB 160821B *
The coincident detection of GW170817 in gravitational waves and electromagnetic radiation spanning the radio toMeV gamma-ray bands provided thefirst direct evidence that short gamma-ray bursts(GRBs)can originate frombinary neutron star(BNS)mergers. On the other hand, the properties of short GRBs in high-energy gamma-raysare still poorly constrained, with only∼20 events detected in the GeV band, and none in the TeV band.GRB 160821B is one of the nearest short GRBs known atz=0.162. Recent analyses of the multiwavelengthobservational data of its afterglow emission revealed an optical-infrared kilonova component, characteristic ofheavy-element nucleosynthesis in a BNS merger. Aiming to better clarify the nature of short GRBs, this burst wasautomatically followed up with the MAGIC telescopes, starting from 24 s after the burst trigger. Evidence of agamma-ray signal is found above∼0.5 TeV at a significance of∼3σduring observations that lasted until 4 hr afterthe burst. Assuming that the observed excess events correspond to gamma-ray emission from GRB 160821B, inconjunction with data at other wavelengths, we investigate its origin in the framework of GRB afterglow models.The simplest interpretation with one-zone models of synchrotron-self-Compton emission from the external forwardshock has difficulty accounting for the putative TeVflux. Alternative scenarios are discussed where the TeVemission can be relatively enhanced. The role of future GeV–TeV observations of short GRBs in advancing ourunderstanding of BNS mergers and related topics is briefly addressed.
Radiation mechanisms: non-thermal ; Gamma rays: general ; Gamma-ray burst: individual:GRB 160821B
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Podaci o izdanju
908 (1)
2021.
90
13
objavljeno
0004-637X
1538-4357
10.3847/1538-4357/abd249
