Thermal Conduction in Magnetized Turbulent Gas

Details Thermal Conduction in Magnetized Turbulent Gas Thermal Conduction in Magnetized Turbulent Gas

2003-02-24

arxiv.org/abs/astro-ph/0302503v1

Astrophys.J. 589 (2003) L77-L80

Astronomy and Astrophysics

Astrophysics

4 pages; 2 figures; submitted to ApJ

Scientific paper

10.1086/376492

Using numerical methods, we systematically study in the framework of ideal MHD the effect of magnetic fields on heat transfer within a turbulent gas. We measure the rates of passive scalar diffusion within magnetized fluids and make the comparisons a) between MHD and hydro simulations, b) between different MHD runs with different values of the external magnetic field (up to the energy equipartition value), c) between thermal conductivities parallel and perpendicular to magnetic field. We do not find apparent suppression of diffusion rates by the presence of magnetic fields, which implies that magnetic fields do not suppress heat diffusion by turbulent motions.

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