X-ray emission possibly coincident with the radio tail of PKS 0301 - 123

Details X-ray emission possibly coincident with the radio tail of PKS 0301 - 123 X-ray emission possibly coincident with the radio tail of PKS 0301 - 123

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...291..611b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 291, April 15, 1985, p. 611-620. NASA-supported research.

Astronomy and Astrophysics

Astronomy

4

Emission Spectra, Galactic Clusters, Radio Sources (Astronomy), Spectral Energy Distribution, X Ray Sources, Astronomical Maps, Bremsstrahlung, Centimeter Waves, Compton Effect, Red Shift, Synchrotron Radiation, Visible Spectrum

Scientific paper

X-ray, radio, and optical observations are reported for a very poor cluster of galaxies containing the radio source PKS 0301 - 123. A long, 100,000 second X-ray observation using the Einstein Observatory's IPC resulted in the serendipitous discovery of a peculiar extended X-ray morphology associated with the poor cluster. The X-ray emission is extended in the same direction and is approximately the same length as the radio-tailed source, PKS 0301 - 123, which was mapped at 6 and 20 cm with the VLA. Optical redshift observations with the KPNO IIDS on the 2.1 m telescope confirm the identification of the X-ray and radio emission with the poor cluster at z = 0.1. It is argued that the X-ray extension is unlikely to be a chance coincidence of a background source projected onto the foreground cluster. Therefore, four possible mechanisms which might physically link the X-ray and radio emission are considered: thermal bremsstrahlung from a cluster with a flattened potential well; inverse Compton scattering of the relativistic electrons in the radio source, X-ray synchrotron radiation; and heating the cluster gas by the turbulent wake of the radio galaxy. The prospects for future observations of such X-ray/radio coincidences are briefly discussed.

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