H.E.S.S. observations of galaxy clusters - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Conference Papers Year : 2007

H.E.S.S. observations of galaxy clusters

W. Domainko
  • Function : Author
W. Benbow
  • Function : Author
J. A. Hinton
  • Function : Author
D. Nedbal
  • Function : Author
G. Pedaletti
  • Function : Author
G. Rowell

Abstract

Clusters of galaxies, the largest gravitationally bound objects in the universe, are expected to contain a significant population of hadronic and leptonic cosmic rays. Potential sources for these particles are merger and accretion shocks, starburst driven galactic winds and radio galaxies. Furthermore, since galaxy clusters confine cosmic ray protons up to energies of at least 1 PeV for a time longer than the Hubble time they act as storehouses and accumulate all the hadronic particles which are accelerated within them. Consequently clusters of galaxies are potential sources of VHE (> 100 GeV) gamma rays. Motivated by these considerations, promising galaxy clusters are observed with the H.E.S.S. experiment as part of an ongoing campaign. Here, upper limits for the VHE gamma ray emission for the Abell 496 and Coma cluster systems are reported.

Dates and versions

in2p3-00166927 , version 1 (13-08-2007)

Identifiers

  • HAL Id : in2p3-00166927 , version 1
  • ARXIV : 0708.1384

Cite

W. Domainko, W. Benbow, J. A. Hinton, O. Martineau-Huynh, M. de Naurois, et al.. H.E.S.S. observations of galaxy clusters. 30th International Cosmic Ray Conference - 30th ICRC, Jul 2007, Merida, Mexico. ⟨in2p3-00166927⟩
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