Evidence of hard X-ray emission from three clusters of galaxies

Details Evidence of hard X-ray emission from three clusters of galaxies Evidence of hard X-ray emission from three clusters of galaxies

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...279..515b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 279, April 15, 1984, p. 515-520. Research supported by the Consiglio Nazion

Astronomy and Astrophysics

Astrophysics

18

Astronomical Spectroscopy, Galactic Clusters, Galactic Radiation, X Ray Sources, Balloon-Borne Instruments, Field Strength, Intergalactic Media, Interstellar Magnetic Fields, Spectral Energy Distribution

Scientific paper

The results of hard-X-ray observations in the energy range 20-100 keV are reported for the clusters of galaxies Coma, A2142, and 3C 129, previously detected at medium energies. The data have been obtained with a balloon-borne hard-X-ray telescope flown during July, 1981. The spectra indicate a hard X-ray tail similar to that reported in the case of Perseus and Virgo Clusters. Assuming that the hard-X-ray flux from these sources is due to inverse Compton scattering of the high-energy electrons with the 2.7-K universal background, the limit on the intergalactic magnetic field strength is derived by using the radio data from these clusters.

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