Witnessing a merging bullet being stripped in the galaxy cluster RXCJ2359-6042

We propose a 80ks XMMNewton observation for the galaxy cluster, RXCJ23596042(A4067). This is a unique system, where a compact bullet penetrates an extended,low density cluster at a low redshift (z0.0992). We can clearly watch theprocess how the bullet component is stripped of its layers outside the core. Wecan also tentatively identify a Mach cone with a wide opening angle, a contactdiscontinuity inside, and infer a mild shock. A deeper XMMNewton observation isabsolutely crucial to characterise the merging processes with imagingspectroscopy in more detail in this unique system. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]