München 2009 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 82: Gamma-Astronomie 1
T 82.6: Vortrag
Montag, 9. März 2009, 18:20–18:35, M218
New results from H.E.S.S. observations of galaxy clusters — •Wilfried Domainko1, Dalobor Nedbal2, Hinton Jim3, and Olivier Martineau-Huynh4 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Institute of Particle and Nuclear Physics, Charles University, Prague, Czech Republic — 3University of Leeds, UK — 4Laboratoire de Physique Nucléaire et de Hautes Energies, Universités Paris VI & VII, France
Clusters of galaxies are believed to contain a significant population of cosmic rays. From the radio and probably hard X-ray bands it is known that clusters are the spatially most extended emitters of non-thermal radiation in the Universe. Due to their content of cosmic rays, galaxy clusters are also potential sources of VHE (>100 GeV) gamma rays. Recently, the massive, nearby cluster Abell 85 has been observed with the H.E.S.S. experiment in VHE gamma rays with a very deep exposure as part of an ongoing campaign. The results of the observation as well as the implications for the energy content in non-thermal particles for this cluster will be presented.