Dortmund 2006 – scientific programme

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T: Teilchenphysik

T 306: Kosmische Strahlung II

T 306.3: Talk

Tuesday, March 28, 2006, 17:10–17:25, HG2-HS3

H.E.S.S. Observations of Active Galactic Nuclei — •Wystan Benbow — Max Planck Institut fuer Kernphysik, Heidelberg

The High Energy Stereoscopic System (H.E.S.S) is an array of four imaging atmospheric-Cherenkov telescopes located in the Khomas Highlands of Namibia. The low energy threshold (~100 GeV), excellent background rejection (>99%), and good angular resolution (<0.1 deg) of H.E.S.S. allow the detection of a 1% Crab flux source in ~25 hours of observation. This enables H.E.S.S. to perform searches for VHE gamma-ray emission from astrophysical objects with unprecedented sensitivity. H.E.S.S. has already detected more than 30 sources of VHE gamma rays, including six AGN. The results of recent H.E.S.S. observations of AGN will be reported here.