14–24 Jul 2025
CICG - International Conference Centre - Geneva, Switzerland
Europe/Zurich timezone

HEGS : Revisiting a decade of H.E.S.S. extragalactic observations

16 Jul 2025, 14:20
15m
Room A

Room A

Talk Gamma-Ray Astrophysics GA

Speaker

François Brun (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France)

Description

During its first phase, from 2004 up to the end of 2012, the H.E.S.S. (High Energy Stereoscopic System) experiment observed the extragalactic skies for more than 2700 hours. These data have been re-analysed in a single consistent framework, leading to the derivation of a catalog of 23 sources. In total, about 6.5% of the sky was observed, allowing for several additional studies to be conducted: source variability, extragalactic gamma-ray background light, and comparison with the Fermi-LAT catalogues. In this contribution, we will discuss these results and present the high-level data (catalogs, maps) released to the astrophysical community.

Collaboration(s) H.E.S.S.

Authors

Dr Andrew Taylor (DESY) François Brun (IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France) Jean-Philippe Lenain (Sorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Paris, France) Matteo Cerruti david Sanchez (LAPP)

Presentation materials