Observation of the cluster of galaxies A 401 at 11 CM

Details Observation of the cluster of galaxies A 401 at 11 CM Observation of the cluster of galaxies A 401 at 11 CM

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...100....7r&link_type=abstract

Astronomy and Astrophysics, vol. 100, no. 1, July 1981, p. 7-11.

Astronomy and Astrophysics

Astronomy

25

Centimeter Waves, Galactic Clusters, Radio Astronomy, Radio Sources (Astronomy), Heao 2, Intergalactic Media, X Ray Astronomy

Scientific paper

Observations of the Abell cluster of galaxies A401 at a wavelength of 11 cm (2700 MHz) are reported. The cluster was mapped by the 100-m telescope of the Max-Planck-Institut fuer Radioastronomie with a beam width of 4.6 arcmin and bandwidth of 200 MHz. Observations, when combined with previous measurements, suggest the presence of a radio halo similar to that of Coma C which contributes to the radio emission at low frequencies. Data are also shown to be consistent with the relation of Roland (1981) in which the cluster radio luminosity is proportional to the product of the X-ray luminosity with the square of the velocity dispersion of the galaxies. From considerations of the observational properties of radio galaxies and X-ray clusters, it is argued that radio halos are not the remnants of radio galaxies, but are due to particular conditions in the intergalactic medium.

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