Fermi-LAT observations have proven that GeV gamma-ray emission is a relatively common feature for many Gamma Ray Bursts (GRB). However the low effective area of space detectors implies low statistics for high-energy photons which prevent any physical interpretation at such energy range. The current generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) arrays of >10^4 m^2 effective area above a few tens of GeV is able to detect higher-energy photons. The High Energy Stereoscopic System (H.E.S.S.) is one of the current generation of IACTs. The large light collection area of the largest telescope and its fast slewing make it perfectly suitable to observe γ rays below 100 GeV with an unprecedented sensitivity. Several tens of GRBs have been observed since 2007. This contribution is about the results of this large sample of observation above a few tens of GeV.
Gamma-Ray Burst observation at Very High Energy with H.E.S.S / Piel, Q.; Arcaro, C. H. E.; Ashkar, H.; Bissaldi, E.; Böttcher, M.; Carosi, A.; Egbert, K.; Hoischen, C.; Holler, M.; O'Brien, P.; Parsons, R.; Prokoph, H.; Pühlhofer, G.; Rowell, G.; Ruiz-Velasco, E.; Seglar-Arroyo, M.; Wagner, S.; Schüssler, F.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - ELETTRONICO. - 358:(2019). (Intervento presentato al convegno 36th International Cosmic Ray Conference, ICRC2019 tenutosi a Madison, WI nel July 24 - August 1, 2019).
Gamma-Ray Burst observation at Very High Energy with H.E.S.S.
Bissaldi, E.Membro del Collaboration Group
;
2019-01-01
Abstract
Fermi-LAT observations have proven that GeV gamma-ray emission is a relatively common feature for many Gamma Ray Bursts (GRB). However the low effective area of space detectors implies low statistics for high-energy photons which prevent any physical interpretation at such energy range. The current generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) arrays of >10^4 m^2 effective area above a few tens of GeV is able to detect higher-energy photons. The High Energy Stereoscopic System (H.E.S.S.) is one of the current generation of IACTs. The large light collection area of the largest telescope and its fast slewing make it perfectly suitable to observe γ rays below 100 GeV with an unprecedented sensitivity. Several tens of GRBs have been observed since 2007. This contribution is about the results of this large sample of observation above a few tens of GeV.| File | Dimensione | Formato | |
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