Hard X-rays from Coma Cluster region

Details Hard X-rays from Coma Cluster region Hard X-rays from Coma Cluster region

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...362l..51b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 362, Oct. 20, 1990, p. L51-L54. Research supported by CNR.

Astronomy and Astrophysics

Astrophysics

20

Galactic Clusters, Galactic Radiation, Magnetic Fields, X Ray Sources, Balloon-Borne Instruments, Compton Effect, Photons, Radiation Counters

Scientific paper

A high-energy nonthermal component in the 18-130 keV energy band was detected by balloon-borne observations of the region containing the Coma Cluster of galaxies. The emitted photon spectrum is well-described by a single power law of photon index -1.77 and an intensity of 8.9 x 10 to the -5th photons/sq cm/s/KeV at 50 keV. The emission supports the presence of a hard tail, and could be due to the inverse Compton mechanism of relativistic electrons permeating the cluster off the 2.7 K background radiation or the presence in the field of an active galactic nucleus.

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