论文标题
合并和积聚冲击的碰撞：Perseus群集中MPC尺度接触不连续性的形成
Collision of Merger and Accretion Shocks: Formation of Mpc-scale Contact Discontinuity in the Perseus Cluster
论文作者
论文摘要
最近在XMM-Newton和Suzaku X射线观察中发现了两个MPC大小的接触不连续性（Walker等，2020）。这些结构已被暂时解释为“宽度冷锋”，这些结构通常与簇气的差分运动有关，并被合并扰动。在这项研究中，我们考虑了一种替代方案，即，群集病毒半径附近的最突出的不连续性是吸积冲击与“失控”合并冲击之间碰撞的结果。我们还讨论了〜1.2 MPC时第二个不连续性的可能起源。
Two Mpc-size contact discontinuities have recently been identified in the XMM-Newton and Suzaku X-ray observations of the outskirts of the Perseus cluster (Walker et al. 2020). These structures have been tentatively interpreted as "sloshing cold fronts", which are customarily associated with differential motions of the cluster gas, perturbed by a merger. In this study we consider an alternative scenario, namely, that the most prominent discontinuity near the cluster virial radius is the result of the collision between the accretion shock and the "runaway" merger shock. We also discuss the possible origin of the second discontinuity at ~1.2 Mpc.
