MG15 - Talk detail |
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Participant |
Berti, Alessio | |||||||
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Institution |
University of Torino and INFN Torino - via Pietro Giuria 1 - Torino - Italy - Italy | |||||||
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Session |
GB6 |
Accepted |
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Time |
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Talk |
Oral abstract |
Title |
MAGIC Follow-up Of Gamma-Ray Bursts At Very High Energies | |||||
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Abstract |
Gamma-Ray Bursts (GRBs) are probably one of the most enigmatic sources in current astrophysics, especially when their high-energy (HE, 100 MeV<E<100 GeV) emission is considered. Fermi-LAT observations unveiled many properties of GRBs emission in the GeV band, but its physical origin is not clearly understood yet. In this context, observations of GRBs at very-high-energies (VHE, E>100 GeV) could provide a crucial contribution in the understanding of the physical processes driving GeV emission in GRBs. For this purpose, ground facilities performing fast-follow up of GRBs above ~50 GeV with high sensitivity are needed. In particular the MAGIC telescopes were designed to have a low energy threshold (~50 GeV) and to perform fast follow-up of GRBs thanks to their fast slewing movement. Up to date, 101 GRBs were followed-up by MAGIC in different observational conditions, providing a large data sample to search for VHE emission. This contribution will focus on the MAGIC GRBs follow-up campaign and highlight the observation of the short and nearby (z=0.16) GRB 160821B, an interesting event showing a hint of VHE gamma-ray emission. |
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