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MAGIC detection of GRB 201216C at z = 1.1

Abe H.
•
Abe S.
•
Acciari V. A.
altro
Steele I. A.
2024
  • journal article

Periodico
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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.
DOI
10.1093/mnras/stad2958
WOS
WOS:001142457500003
Archivio
https://hdl.handle.net/11368/3075313
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85180468507
https://academic.oup.com/mnras/article/527/3/5856/7326795
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/3075313/2/stad2958.pdf
Soggetti
  • Astroparticle physic

  • radiation mechanisms:...

  • gamma-ray burst: indi...

  • gamma-ray burst

  • Astrophysics - High E...

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