The intracluster gas around Cygnus-A

Arnaud, K. A., Fabian, A. C., Eales, Stephen Anthony ORCID: https://orcid.org/0000-0002-7394-426X, Jones, C. and Forman, W. 1984. The intracluster gas around Cygnus-A. Monthly Notices of the Royal Astronomical Society 211 , pp. 981-989.

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Abstract

Einstein Observatory X-ray observations show that the radio source Cygnus-A lies at the centre of about 1014M_sun; of hot gas. In one direction this gas extends to over 1 Mpc from the radio source, a size comparable with previously observed large X-ray clusters. Gas out to a radius of 125 kpc has a cooling time of less than a Hubble time leading to a cooling flow of about 90 M_sun;yr-1. The hot gas has an r-1 density profile giving an age of less than 2×107yr for a constant power input from the beam. The hotspot advance speed is found to be greater than 0.011 c, using recently published estimates of the pressure in the radio hotspots. Present X-ray observations are not able to detect the shocked gas confining the radio plasma.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Publisher:	Oxford University Press
ISSN:	0035-8711
Related URLs:	http://adsabs.harvard.edu/abs/1984MNRAS....
Last Modified:	24 Oct 2022 11:52
URI:	https://orca.cardiff.ac.uk/id/eprint/49603

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