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The Role of Magnetic Reconnection in the Interaction of High-Velocity Clouds and the Galactic Disk

Published online by Cambridge University Press:  12 April 2016

Harald Lesch  and
Guido T. Birk
Harald Lesch
Affiliation:
Institut für Astronomie und Astrophysik, LMU München, Scheinerstr. 1, 81679 München, Germany
Guido T. Birk
Affiliation:
Institut für Astronomie und Astrophysik, LMU München, Scheinerstr. 1, 81679 München, Germany

Abstract

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The boundaries of high-velocity-clouds that hit the Galactic plane are sources of strong X-ray emission indicating gas temperatures of a few million Kelvin. We show that numerous individual magnetic reconnection processes in the interaction region between an HVC and the ionized Reynolds layer may cause the gas heating via dynamical Ohmic dissipation. We present results of numerical plasmaneutral gas fluid simulations performed to study the dynamical reconnection process and to calculate the conversion of magnetic energy into heat.

Type
Part VII Gas in Superbubbles and in the Galactic Halo
Information
International Astronomical Union Colloquium , Volume 166: The Local Bubble and Beyond , 1997 , pp. 451 - 454
Copyright
Copyright © Springer-Verlag 1998

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