Tsunamis in Galaxy Clusters: Heating of Cool Cores by Acoustic Waves
Tsunamis in Galaxy Clusters: Heating of Cool Cores by Acoustic Waves
复制标题
星系团中的海啸:声波加热冷核心
DOI:
10.1086/380113
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发表时间:
2003
期刊:
影响因子:
--
通讯作者:
K. Wada
中科院分区:
文献类型:
--
作者:
Y. Fujita;T. Suzuki;K. Wada
Using an analytical model and numerical simulations, we show that acoustic waves generated by turbulent motion in intracluster medium effectively heat the central region of a so-called cooling flow cluster. We assume that the turbulence is generated by substructure motion in a cluster or cluster mergers. Our analytical model can reproduce observed density and temperature profiles of a few clusters. We also show that waves can transfer more energy from the outer region of a cluster than thermal conduction alone. Numerical simulations generally support the results of the analytical study.