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Preprint | PUBDB-2025-00107 |
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2023
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Please use a persistent id in citations: doi:10.1093/mnras/stad2958
Report No.: arXiv:2310.06473
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.
Keyword(s): gamma ray: burst ; radiation: electromagnetic ; VHE ; MAGIC ; redshift ; gamma ray: emission ; Compton scattering ; GeV ; synchrotron ; optical ; astroparticle physics ; radiation mechanisms: non-thermal ; gamma-ray burst: individual: GRB 201216C ; gamma-ray bursts
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Journal Article
MAGIC detection of GRB 201216C at $z$ = 1.1
Monthly notices of the Royal Astronomical Society 527(3), 5856 - 5867 (2023) [10.1093/mnras/stad2958]
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