2007ApJ...659L...1F

Query : 2007ApJ...659L...1F

2007ApJ...659L...1F - Astrophys. J., 659, L1-L4 (2007/April-2)

The origin of ripples in cool cores of galaxy clusters: heating by magnetohydrodynamic waves?

FUJITA Y., SUZUKI T.K., KUDOH T. and YOKOYAMA T.

Abstract (from CDS):

We 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.

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Journal keyword(s): Galaxies: Cooling Flows - Galaxies: Active - Galaxies: Clusters: General - Waves - X-Rays: Galaxies: Clusters

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
2 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
3 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0

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