Speaker
Description
Galaxy clusters, the largest gravitationally bound structures in the universe, provide astronomers with insights into the formation and evolution of large-scale structures through the study of their mergers. X-ray observations allow for direct analysis of the intracluster gas, revealing vital information such as temperature and entropy distribution, which aids in understanding the merging process. We present XMM-Newton analysis of the merging galaxy cluster MCXC J0157.4-0550 (z=0.1289). We create 2D maps of the cluster's thermodynamic properties using spatially resolved spectra and hardness ratio maps. Our findings reveal a filamentary structure, likely material stripped from the sub-cluster as it moves through the main cluster. This filament connects the sub and main clusters, suggesting the sub-cluster is falling towards the main cluster's edge along the NE/SW direction. We also detect a spiral-like structure within the sub-cluster, caused by ram pressure stripping material away. Temperature analysis reveals a cold front. Our results suggest the merging process began 2 Gyr ago and is still ongoing.
