绘制子弹团的暗轨迹
Mapping the dark trajectory of the Bullet Cluster
摘要：
我们模拟了碰撞星系团系统1 E0657 -56（子弹星系团）中暗物质湮灭产生的电子/正电子。这些被磁场限制的带电粒子清晰地追踪着子弹的路径，子弹以3000-5000 km/s的速度穿过主星团。在每个团簇中加入暗物质亚结构（暗晕）的影响后，发现湮灭率大大提高，尾流中的正电子密度与子弹团簇中的正电子密度相似。这打开了大门，明确检测的湮灭信号通过SZ效应，在显着的分离，从热电子。
英文摘要：
We model the electrons/positrons produced by dark matter annihilations in the colliding galaxy cluster system 1E0657-56 (the bullet cluster). These charged particles, confined by the Magnetic field, clearly trace the path of the bullet, which passes through the main cluster with a speed of 3000-5000 km/s. Adding the effect of dark matter substructure (subhalos) in each cluster we find the annihilation rate is enhancedgreatly and the density of positrons in the trail is similar to that within the bullet cluster. This opens the door to unambiguous detection of the annihilation signal through the SZ effect, at significant separation from the thermal electrons.
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