Rising jet-inflated bubbles in clusters of galaxies
Rising jet-inflated bubbles in clusters of galaxies
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星系团中上升的喷流膨胀气泡
DOI：
10.1111/j.1745-3933.2008.00512.x
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发表时间：
2008
影响因子：
--
通讯作者：
Assaf Sternberg Noam Soker
中科院分区：
文献类型：
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作者：
Assaf Sternberg Noam Soker
我们进行二维轴对称（简称为2.5D）流体动力学数值模拟的气泡演化的星系团。我们使用缓慢的大规模喷流以大角度膨胀气泡，并跟踪它们在团内介质中上升时的演变。我们发现，这些喷射膨胀的气泡是相当稳定的，可以达到大的距离在集群中，同时保持其基本结构。喷射膨胀的气泡的稳定性主要来自于在其膨胀阶段在其周围形成的致密壳，以及来自于气泡和壳的向外动量。相反，用手插入到网格上并且没有通过射流膨胀的气泡，即人工气泡，缺乏这些稳定因素;因此，它们很快被破坏。喷射膨胀的气泡的稳定性消除了对气泡中稳定磁场的需求。
We conduct two-dimensional axisymmetric (referred to as 2.5D) hydrodynamical numerical simulations of bubble evolution in clusters of galaxies. We inflate bubbles using slow, massive jets with a wide opening angle, and follow their evolution as they rise through the intracluster medium. We find that these jet-inflated bubbles are quite stable, and can reach large distances in the cluster while maintaining their basic structure. The stability of the jet-inflated bubble comes mainly from the dense shell that forms around it during its inflation stage, and from the outward momentum of the bubble and shell. On the contrary, bubbles that are inserted by hand on to the grid and not inflated by a jet, i.e. an artificial bubble, lack these stabilizing factors; therefore, they are rapidly destroyed. The stability of the jet-inflated bubble removes the demand for stabilizing magnetic fields in the bubble.
DOI：
10.1111/j.1745-3933.2006.00243.x
发表时间：
2006-06
影响因子：
--
作者：
S. Heinz;S. Heinz;M. Brüggen;A. Young;Emily M. Levesque
通讯作者：
S. Heinz;S. Heinz;M. Brüggen;A. Young;Emily M. Levesque
化石簇气泡中的宇宙射线限制
DOI：
10.1111/j.1365-2966.2007.12659.x
发表时间：
2008
影响因子：
4.8
作者：
Ruszkowski;Enßlin;Brüggen;Begelman;Churazov
通讯作者：
Churazov