GRB Observations with H.E.S.S. II - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

GRB Observations with H.E.S.S. II

Clemens Hoischen
  • Fonction : Auteur
Arnim Balzer
  • Fonction : Auteur
Elisabetta Bissaldi
  • Fonction : Auteur
Matthias Füssling
  • Fonction : Auteur
Tania Garrigoux
  • Fonction : Auteur
Daniel Gottschall
  • Fonction : Auteur
Markus Holler
  • Fonction : Auteur
Alison Mitchell
  • Fonction : Auteur
Paul O'Brien
  • Fonction : Auteur
Robert Parsons
  • Fonction : Auteur
Gerd Pühlhofer
  • Fonction : Auteur
Gavin Rowell
  • Fonction : Auteur
P.H. Thomas Tam
  • Fonction : Auteur
Stefan Wagner
  • Fonction : Auteur

Résumé

The High Energy Stereoscopic System (H.E.S.S.) has been searching for counterparts of Gamma Ray Bursts (GRBs) for many years. In 2012 the system was upgraded with a fifth 28 m diameter telescope (CT5) which is equipped with faster motors for rapid repointing, marking the start of the second phase of H.E.S.S. operation (H.E.S.S. II). CT5s large light collection area of $600\,\mathrm{m}^{2}$ improves the sensitivity to low-energy gamma-rays and even extends the energy range below 100 GeV. The search for counterparts continues now in the energy range of tens of GeV to tens of TeV. A detection in this energy range would open a new window to the part of the spectrum of these highly energetic explosions which Fermi-LAT has only successfully detected in a reduced subset of events, with rather limited statistics. In the past years, H.E.S.S. has performed follow-up observations based on GRB detections by Swift-BAT and Fermi-GBM/-LAT. This Target of Opportunity observation program was carried out with a generalised Target of Opportunity Alert system. This contribution will highlight key features of the Target of Opportunity Alert system, present follow-up statistics of GRBs as well as detailed results of promising follow-up observations.

Dates et versions

hal-01903192 , version 1 (24-10-2018)

Identifiants

Citer

Clemens Hoischen, Arnim Balzer, Elisabetta Bissaldi, Matthias Füssling, Tania Garrigoux, et al.. GRB Observations with H.E.S.S. II. 35th International Cosmic Ray Conference, Jul 2017, Busan, South Korea. pp.636, ⟨10.22323/1.301.0636⟩. ⟨hal-01903192⟩
69 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More