Hard X-ray emission from clusters of Galaxies

Details Hard X-ray emission from clusters of Galaxies Hard X-ray emission from clusters of Galaxies

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..510..452d&link_type=abstract

THE FIFTH COMPTON SYMPOSIUM. AIP Conference Proceedings, Volume 510, pp. 452-456 (2000).

Computer Science

Galaxy Clusters, Radiation Mechanisms, Polarization

Scientific paper

We analyze the origin of the flux of hard X-rays from the Coma cluster observed with the Beppo-SAX telescope. It is often assumed that this flux is produced by nonthermal particles in-situ accelerated in the Coma halo. We show, however, that in the case of in-situ acceleration the hard X-ray flux may be generated by thermal particles whose spectrum is distorted by the acceleration. This mimic the effect of two-temperature distribution of the bremsstrahlung X-ray emission. A power-law non-thermal spectrum is formed at energies much higher than the energy range observed by Beppo-SAX. .

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