Diffuse radio emission in the Coma cluster and Abell 1367 - Observations at 430 and 1400 MHz

Details Diffuse radio emission in the Coma cluster and Abell 1367 - Observations at 430 and 1400 MHz Diffuse radio emission in the Coma cluster and Abell 1367 - Observations at 430 and 1400 MHz

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85.1565h&link_type=abstract

Astronomical Journal, vol. 85, Dec. 1980, p. 1565-1576.

Astronomy and Astrophysics

Astronomy

53

Diffuse Radiation, Extragalactic Radio Sources, Galactic Clusters, Galactic Radio Waves, Relativistic Electron Beams, Intergalactic Media, Magnetohydrodynamic Waves, Particle Motion, Propagation Velocity, Radio Interferometers, Radio Spectra, X Ray Sources

Scientific paper

Two rich clusters of galaxies, Abell 1656 (the Coma cluster) and Abell 1367, have been mapped at both 430 and 1400 MHz with the 305-m telescope at Arecibo. The contribution to the observed radio emission due to known discrete sources has been calculated by convolving interferometrically determined source lists with observed Arecibo beam patterns, and maps of the diffuse radio emission alone have been constructed. Both clusters contain regions of diffuse radio emission, although the source in Coma is larger and much more luminous than the source in Abell 1367. The linear extent of the diffuse emission and its dependence on frequency have been used to study particle propagation rates and modes of diffusion in the intracluster medium. The possible correlations between the diffuse radio emission and X-ray emission in these clusters have been investigated, and it has been found that the observed X-ray luminosities can be accounted for if the intracluster gas is heated through Coulomb interactions with the relativistic electrons responsible for the diffuse radio emission.

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