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Direct Evidence of a Major Merger in the Perseus Cluster
Kim HyeongHan, M. James Jee, Wonki Lee, John ZuHone, Irina Zhuravleva, Wooseok Kang, Ho Seong Hwang
https://arxiv.org/abs/2405.00115

Direct Evidence of a Major Merger in the Perseus Cluster
Although the Perseus cluster has often been regarded as an archetypical relaxed galaxy cluster, several lines of evidence including cold fronts, asymmetric plasma morphology, filamentary galaxy distribution, etc., provide a conflicting view of its dynamical state, suggesting that the cluster might have experienced a major merger. However, the absence of a clear merging companion identified to date hampers our understanding of the evolutionary track of the Perseus cluster consistent with these o…