MAGIC detection of GRB 201216C at z = 1.1

Hyuga Abe ,J M Miranda ,Anna Campoy-Ordaz ,F Di Pierro ,A Cifuentes ,A Biland ,C G Mundell ,Santiago Ubach ,R Carosi ,I Agudo ,B Schleicher ,Nikola Mang ,P Majumdar ,Katsuaki Asano ,M Manganaro ,Irene Burelli ,Tarek Hassan ,A Moralejo ,F Longo ,F Giordano ,V A Acciari ,D Green ,A Carosi ,Giacomo Principe ,Ana Babić ,Alexander Hahn ,Stefano Truzzi ,J M Paredes ,F Tavecchio ,D Dominis Prester ,J Besenrieder ,V D’elia ,A Del Popolo ,H A Mondal ,M Ribó ,S Covino ,Davide Depaoli ,M Teshima ,H Tajima ,Luc Antonelli ,J Herrera ,Lovro Pavletić ,O Blanch ,S Ansoldi ,Simone Mender ,J Sitarek ,Giovanni Ceribella ,Mitsunari Takahashi ,J L Contreras ,D Paneque ,D Sobczynska ,R Paoletti ,Seiya Nozaki ,Ryo Imazawa ,Sargis Gasparyan ,N Sahakyan ,M Makariev ,C F Vigorito ,M Peršić ,M Martı́nez ,A Melandri ,G Pirola ,J L Schubert ,S Lombardi ,F G Saturni ,Željka Bošnjak ,M Gaug ,E Lyard ,Lea Heckmann ,Yukiho Kobayashi ,J Becerra González ,Moritz Hütten ,Chaitanya Priyadarshi ,Satoru Abe ,Juan Bernete ,J A Barrio ,M Vazquez Acosta ,D Dorner ,Alessia Spolon ,A Lorini ,João Gabriel Giesbrecht Paiva ,Mar Carretero-Castrillo ,S Mangano ,A Arbet Engels ,Edgar Molina ,A De Angelis ,Chiara Righi ,C Delgado Mendez ,T Schweizer ,Tjark Miener ,D Morcuende ,Ivana Batković ,Vitalii Sliusar ,M Palatiello ,A Sciaccaluga ,J G Green ,Manuel Artero ,K Nishijima ,Saša Mićanović ,Paweł Gliwny ,V Verguilov ,T Njoh Ekoume ,C Arcaro ,Alicia Fattorini ,E Prandini ,Juliane Van Scherpenberg ,M Delfino ,T Terzić ,Felix Schmuckermaier ,K Nilsson ,A Stamerra ,Roger Grau ,Roman Iotov ,Lisa Nikolić ,Miguel Molero Gonzalez ,Ilaria Viale ,M Mariotti ,L Di Venere ,J Cortina ,N Jordana-Mitjans ,P Da Vela ,Ievgen Vovk ,Joshua Baxter ,Stefano Menchiari ,C Nanci ,Sofia Ventura ,J Rico ,P G Prada Moroni ,D Mazin ,Gert Werner Kluge ,H Kubo ,M Doro ,P Temnikov ,Daniel Kerszberg ,Antonio Tutone ,Davide Miceli ,T Saito ,E Bernardini ,F Podobnik ,F Leone ,D Hadasch ,M Garczarczyk ,Pouya M Kouch ,J Strišković ,G Bonnoli ,Giacomo D’amico ,D Strom ,V Neustroev ,U Barres De Almeida ,A López-Oramas ,Jenni Jormanainen ,R Walter ,Alessio Berti ,A Gomboc ,M Strzys ,María Láinez Lezáun ,C Fruck ,B De Lotto ,Stefan Cikota ,Ryuji Takeishi ,M López ,K Schmidt ,Cosimo Nigro ,K Mannheim ,D Elsäesser ,Mireia Nievas Rosillo ,Lena Linhoff ,Yasushi Fukazawa ,Danijela Pavlović ,W Rhode ,Luca Tosti ,Yoshihiro Suda ,G Maneva ,W Bednarek ,Satoshi Fukami ,Yating Chai ,Sofia Suutarinen ,Alessandra Lamastra ,Kazuma Ishio ,A J Castro‐Tirado ,Bernardo Machado De Oliveira Fraga ,Serena Loporchio ,J Delgado ,E Colombo ,Akihisa Okumura ,Israel Martinez ,Manisha Shrestha ,R López ,Dominik Baack ,Juan Escudero ,F Dazzi ,Yoshiki Ohtani ,N Godinović ,K Noda ,K Satalecka ,Gabriel Emery ,Lara Nava ,Luis Fariña ,V Vitale ,Tokonatsu Yamamoto ,Martin Will ,E Lindfors ,N Giglietto ,R Mirzoyan ,Kenta Terauchi ,T Aniello ,Andrés Baquero ,Luca Foffano ,Jorge Otero-Santos ,Marine Pihet ,S Paiano ,A Mas-Aguilar ,I A Steele

doi:10.1093/mnras/stad2958

Abstract

ABSTRACT Gamma-ray bursts (GRBs) are explosive transient events occurring at cosmological distances, releasing a large amount of energy as electromagnetic radiation over several energy bands. We report the detection of the long GRB 201216C by the MAGIC telescopes. The source is located at z = 1.1 and thus it is the farthest one detected at very high energies. The emission above 70 GeV of GRB 201216C is modelled together with multiwavelength data within a synchrotron and synchrotron self-Compton (SSC) scenario. We find that SSC can explain the broad-band data well from the optical to the very-high-energy band. For the late-time radio data, a different component is needed to account for the observed emission. Differently from previous GRBs detected in the very-high-energy range, the model for GRB 201216C strongly favours a wind-like medium. The model parameters have values similar to those found in past studies of the afterglows of GRBs detected up to GeV energies.

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