The structure of the intracluster medium of the Perseus cluster.
Abstract
The authors present results for the Perseus cluster from the ROSAT All Sky Survey. X-ray emission is found out to a radius of 1.3 degrees. The image shows a clear ellipticity and nonaxisymmetry, consistent with a superposition of a subcluster to the east. The spectral results indicate a strong downward temperature gradient towards the core of the cluster consistent with the presence of a cooling flow and a central temperature of about 2 to 3 keV. The temperature of the intracluster medium in the eastern part is also found to be substantially lower (2 to 3 keV) than in the rest of the cluster (6 to 7 keV). The authors interpret the excess cool emission as evidence for an on-going merger. They detect extended emission centred on the bright elliptical IC 310.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- March 1992
- Bibcode:
- 1992A&A...256L..11S
- Keywords:
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- Cooling Flows (Astrophysics);
- Galactic Clusters;
- Galactic Structure;
- Intergalactic Media;
- Elliptical Galaxies;
- Rosat Mission;
- X Ray Astronomy;
- Astrophysics