MHD Simulations of a Moving Subclump with Heat Conduction
Abstract
High resolution observations of cluster of galaxies by Chandra have revealed the existence of an X-ray emitting comet-like galaxy C153 in the core of cluster of galaxies A2125. The galaxy C153 moving fast in the cluster core has a distinct X-ray tail on one side, obviously due to ram pressure stripping, since the galaxy C153 crossed the central region of A2125. The X-ray emitting plasma in the tail is substantially cooler than the ambient plasma. We present results of two-dimensional magnetohydrodynamic simulations of the time evolution of a subclump like C153 moving in magnetized intergalactic matter. Anisotropic heat conduction is included. We found that the magnetic fields are essential for the existence of the cool X-ray tail, because in non-magnetized plasma the cooler subclump tail is heated up by isotropic heat conduction from the hot ambient plasma and does not form such a comet-like tail.
Cite
@article{arxiv.astro-ph/0412359,
title = {MHD Simulations of a Moving Subclump with Heat Conduction},
author = {Naoki Asai and Naoya Fukuda and Ryoji Matsumoto},
journal= {arXiv preprint arXiv:astro-ph/0412359},
year = {2015}
}
Comments
4 pages, 3 figures. To appear in a special issue of the Journal of the Korean Astronomical Society (JKAS). Proceedings of the "International conference on Cosmic Rays and Magnetic Fields in Large Scale Structure", Busan, Korea, 2004; high quality files are available at http://www.astro.phys.s.chiba-u.ac.jp/~asai/kaw3-astro-ph.html