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Optimized gyrosynchrotron algorithms and fast codes

Published online by Cambridge University Press:  08 June 2011

Alexey A. Kuznetsov  and
Gregory D. Fleishman
Alexey A. Kuznetsov
Affiliation:
Armagh Observatory, Armagh BT61 9DG, Northern Ireland, UK email: aku@arm.ac.uk Institute of Solar-Terrestrial Physics, Irkutsk 664033, Russia
Gregory D. Fleishman
Affiliation:
New Jersey Institute of Technology, Newark, NJ 07102, USA email: gfleishm@njit.edu Ioffe Physico-Technical Institute, St. Petersburg 194021, Russia
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Abstract

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Gyrosynchrotron (GS) emission of charged particles spiraling in magnetic fields plays an exceptionally important role in astrophysics. In particular, this mechanism makes a dominant contribution to the continuum solar and stellar radio emissions. However, the available exact equations describing the emission process are extremely slow computationally, thus limiting the diagnostic capabilities of radio observations. In this work, we present approximate GS codes capable of fast calculating the emission from anisotropic electron distributions. The computation time is reduced by several orders of magnitude compared with the exact formulae, while the computation error remains within a few percent. The codes are implemented as the executable modules callable from IDL; they are made available for users via web sites.

Keywords

radiation mechanisms: nonthermalmethods: numericalSun: flaresSun: radio radiationstars: flareradio continuum: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S274: Advances in Plasma Astrophysics , September 2010 , pp. 314 - 316
Copyright
Copyright © International Astronomical Union 2011

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