Yutaka Fujita et al 2007 ApJ 659 L1 doi:10.1086/516823
The Origin of Ripples in Cool Cores of Galaxy Clusters: Heating by Magnetohydrodynamic Waves?
FREE ISSUEYutaka Fujita1, Takeru K. Suzuki2, Takahiro Kudoh3 and Takaaki Yokoyama4
Show affiliationsWe consider MHD waves as a heating source of cool cores of galaxy clusters. In particular, we focus on transverse waves (Alfvén waves), because they can propagate a longer distance than longitudinal waves (sound waves). Using MHD simulations, we found that the transverse waves can stably heat a cool core if the wave period is large enough (
108 yr). Moreover, the longitudinal waves that are created as a by-product of the nonlinear evolution of the transverse waves could be observed as the "ripples" found in cool cores.
- Subject headings
cooling flows; galaxies: active; galaxies: clusters: general; waves; X-rays: galaxies: clusters
- Dates
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Issue 1 (2007 April 10)
Received 2007 January 16, accepted for publication 2007 March 1
Published 2007 March 12
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The Origin of Ripples in Cool Cores of Galaxy Clusters: Heating by Magnetohydrodynamic Waves?
Yutaka Fujita et al 2007 ApJ 659 L1
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