TY - JOUR A1 - Schindler, Sabine A1 - Castillo-Morales, A. A1 - De Filippis, E. A1 - Schwope, A. D. A1 - Wambsganß, Joachim T1 - Discovery of depressions in the X-ray emission of the distant galaxy cluster RBS797 in a CHANDRA observation N2 - 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+1.2-1.0 keV) with a total mass of Mtot(r500)= 6.5+1.6-1.2 *E14Msun. Y1 - 2001 ER -