Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-12-07
Astronomy and Astrophysics
Astrophysics
8 pages, postscript file including 7 figures, accepted for publication in M.N.R.A.S
Scientific paper
X-ray and radio continuum observations of the bimodal cluster A3528 in the Shapley Supercluster are presented. From a ROSAT PSPC pointed observation we find a marginal tendency of the intracluster gas to be hotter in the region between the two subclusters. This effect can be interpreted as the signature of interaction of the subclusters. We infer that the centres of the subclusters in A3528 will meet within a few 10^8 years. In continuum observations at 20cm and at 90cm with the Very Large Array we find four galaxies having radio emission. One of these galaxies shows a head-tail structure suggesting a motion of the galaxy through the intracluster medium. The radio tail shows an imbalance between the thermal pressure of the intra-cluster gas and the pressure of the relativistic electrons.
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