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Tsunamis in Galaxy Clusters: Heating of Cool Cores by Acoustic Waves

Yutaka Fujita·Takeru Ken Suzuki·Keiichi Wada
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Abstract

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.

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Yutaka Fujita, Takeru Ken Suzuki, Keiichi Wada. 2003-09-30. Tsunamis in Galaxy Clusters: Heating of Cool Cores by Acoustic Waves. https://doi.org/10.1086/380113

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