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 M _ { tot } ( r _ { 500 } ) = 6.5 ^ { +1.6 } _ { -1.2 } \times 10 ^ { 14 } { M } _ { \odot } .