Iron He-triplet signatures of shocks in the hottest galaxy clusters. Z/W line ratio, line broadening, and electron-ion temperature equilibration

Eugene Churazov, Yuri Ralchenko, Ildar I. Khabibullin +5

A merger of clusters naturally drives shocks with Mach number $\mathcal{M}\lesssim 3$ in the intra-cluster medium (ICM). This process creates several distinct signatures, including…