26-30 October 2015
Asia/Tokyo timezone

Recent observations of Active Galactic Nuclei with H.E.S.S.

26 Oct 2015, 14:25
Room 5.6 ()

Room 5.6

Oral presentation Gamma-ray Astrophysics Gamma-Ray Astrophysics


Dr Robert Wagner (University of Stockholm)


By upgrading the H.E.S.S. array of Imaging Atmospheric Cherenkov Telescopes with a fifth, 28-m diameter telescope, the sensitivity of H.E.S.S. towards low gamma-ray energies has been extended to energies below 100 GeV. This allows studies particularly of distant Active Galactic Nuclei (AGN) with soft gamma-ray spectra. Results of observations with the five-telescope array will be discussed, including the low-energy view of H.E.S.S. on the blazar-type AGN PKS 2155-304 and PG 1553+113. We also will discuss how low-energy AGN observations will improve our insights on radiation mechanisms in blazars, on the extragalactic background light, but also on fundamental physics topics.

Primary author

Dr Robert Wagner (University of Stockholm)

Presentation Materials