The answer is blowing in the wind: simulating the interaction of jets with dynamic cluster atmospheres
The answer is blowing in the wind: simulating the interaction of jets with dynamic cluster atmospheres
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DOI：
10.1111/j.1745-3933.2006.00243.x
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发表时间：
2006-06
影响因子：
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通讯作者：
S. Heinz;S. Heinz;M. Brüggen;A. Young;Emily M. Levesque
中科院分区：
文献类型：
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作者：
S. Heinz;S. Heinz;M. Brüggen;A. Young;Emily M. Levesque
我们目前的数值模拟调查活动星系核射流与星系团的相互作用，第一次考虑到集群气体和详细的集群物理的动态性质。模拟成功地再现了观察到的簇射电源的形态。我们发现，集群的不均匀性和大规模的流动有显着的影响，无线电源的形态和不能被忽视的先验时，调查无线电源动力学。形态学的比较表明，像Virgo和阿贝尔4059这样的星系团中心的气体显示出明显的剪切和/或旋转。我们发现，剪切和旋转的intraclustermedium移动大量的冷物质回到射流的路径，确保后续的射流爆发遇到足够的柱密度的气体耦合与内部集群气体，从而减轻了问题的抽空通道在最近的文献中讨论。相同的效应重新分配了由射流沉积的多余能量Δ E，使得Δ E在后期的分布与各向同性一致。
We present numerical simulations investigating the interaction of active galactic nucleus jets with galaxy clusters, for the first time taking into account the dynamic nature of the cluster gas and detailed cluster physics. The simulations successfully reproduce the observed morphologies of radio sources in clusters. We find that cluster inhomogeneities and large-scale flows have a significant impact on the morphology of the radio source and cannot be ignored a priori when investigating radio source dynamics. Morphological comparison suggests that the gas in the centres of clusters like Virgo and Abell 4059 shows significant shear and/or rotation. We find that shear and rotation in the intracluster medium move large amounts of cold material back into the path of the jet, ensuring that subsequent jet outbursts encounter a sufficient column density of gas to couple with the inner cluster gas, thus alleviating the problem of evacuated channels discussed in the recent literature. The same effects redistribute the excess energy ΔE deposited by the jet, making the distribution of ΔE at late times consistent with being isotropic.