Optimized gyrosynchrotron algorithms and fast codes

Alexey A. Kuznetsov, Gregory Fleishman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationAdvances in Plasma Astrophysics
EditorsAlfio Bonanno, Elisabete de Gouveia Dal Pino, Alexander Kosovichev
Pages314-316
Number of pages3
EditionS274
DOIs
StatePublished - Sep 2010

Publication series

NameProceedings of the International Astronomical Union
NumberS274
Volume6
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

Keywords

  • Sun: flares
  • Sun: radio radiation
  • methods: numerical
  • radiation mechanisms: nonthermal
  • radio continuum: general
  • stars: flare

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