Volume 376, Number 3, September IV 2001
|Page(s)||L27 - L30|
|Published online||15 September 2001|
Discovery of depressions in the X-ray emission of the distant galaxy cluster RBS797 in a CHANDRA observation
Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead CH41 1LD, UK
2 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
3 Universität Potsdam, Institut für Physik, Am Neuen Palais 10, 14469 Potsdam, Germany
Corresponding author: S. Schindler, email@example.com
Accepted: 9 July 2001
We present CHANDRA observations of the X-ray luminous, distant galaxy cluster RBS797 at . 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 ( keV) with a total mass of .
Key words: galaxies: clusters: general / intergalactic medium / cosmology: observations / cosmology: theory / dark matter / X-rays: galaxies
© ESO, 2001
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