Thermal conduction and particle transport in strong MHD turbulence, with application to galaxy-cluster plasmas

Details Thermal conduction and particle transport in strong MHD turbulence, with application to galaxy-cluster plasmas Thermal conduction and particle transport in strong MHD turbulence, with application to galaxy-cluster plasmas

2003-03-11

arxiv.org/abs/astro-ph/0303214v2

Astrophys.J. 602 (2004) 170-180

Astronomy and Astrophysics

Astrophysics

Major revision: higher resolution simulations lead to significantly different conclusions. 26 pages, 10 figures

Scientific paper

10.1086/380897

We investigate field-line separation in strong MHD turbulence analytically and with direct numerical simulations. We find that in the static-magnetic-field approximation the thermal conductivity in galaxy clusters is reduced by a factor of about 5-10 relative to the Spitzer thermal conductivity of a non-magnetized plasma. We also estimate how the thermal conductivity would be affected by efficient turbulent resistivity.

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