The X-ray structure of nearby galaxy clusters

Details The X-ray structure of nearby galaxy clusters The X-ray structure of nearby galaxy clusters

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..191h&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)191-(12)198

Astronomy and Astrophysics

Astronomy

10

Astronomical Models, Cosmology, Galactic Clusters, Galactic Structure, Luminosity, Universe, X Ray Astronomy, Heao 2, Proportional Counters, Rosat Mission, X Ray Imagery

Scientific paper

The combination of the large effective area and the very low internal background of the ROSAT Position Sensitive Proportional Counter provides an extremely sensitive instrument for the study of diffuse X-ray sources. In this paper we review new results on the X-ray structure of nearby clusters as measured with ROSAT. Substructure is a common feature in these objects. Such structure provides evidence that clusters have formed relatively recently through mergers of relatively large subunits. This behavior is predicted by hierarchical formation theories in a dense universe.

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