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Discovery of depressions in the X-ray emission of the distant galaxy cluster RBS797 in a CHANDRA observation

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Schindler, S. and Castillo Morales, África and De Filippis, E. and Schwope, A. and Wambsganss, J. (2001) Discovery of depressions in the X-ray emission of the distant galaxy cluster RBS797 in a CHANDRA observation. Astronomy and astrophysics, 376 (3). L27-L30. ISSN 1432-0746

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Official URL: http://arxiv.org/pdf/astro-ph/0107504v1.pdf



Abstract

We present CHANDRA observations of the X-ray luminous, distant galaxy cluster RBS797 at z = 0.35. In the central region the X-ray emission shows two pronounced X-ray minima, which are located opposite to each other with respect to the cluster centre. These depressions suggest an interaction between the central radio galaxy and the intra-cluster medium, which would be the first detection in such a distant cluster. The minima are symmetric relative to the cluster centre and very deep compared to similar features found in a few other nearby clusters. A spectral and morphological analysis of the overall cluster emission shows that RBS797 is a hot cluster (T = 7.7(-1.0)(+1.2) keV) with a total mass of M-tot(r(500)) = 6.5(-1.2)(+1.6) x 10(14) M-..


Item Type:Article
Additional Information:

We thank Doug Burke and Valeri Hambaryan for help with the data analysis and Phil James for carefully reading the manuscript.

Uncontrolled Keywords:Rosat bright survey; Spectra; Plasma
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:30628
Deposited On:05 Jun 2015 10:51
Last Modified:10 Dec 2018 15:05

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