Gyrosynchrotron emission from anisotropic electron distributions

Document Type

Article

Publication Date

4-20-2003

Abstract

We present numerical calculations of the intensity, degree of polarization, and spectral index of gyrosynchrotron emission produced by fast electrons with anisotropic pitch-angle distributions. The anisotropy is found to affect the emission substantially. The emission intensity can change up to a few orders of magnitude at the optically thin region compared with the Isotropie case. The local value of spectral index changes considerably with the anisotropy. X-mode polarization increases for loss cone distributions and decreases for beamlike distributions. Moreover, the sense of polarization can correspond to the ordinary wave mode at the optically thin region for a certain range of view angles for beamlike distributions. We discuss possible applications and observability of the effects obtained.

Identifier

0042880992 (Scopus)

Publication Title

Astrophysical Journal

External Full Text Location

https://doi.org/10.1086/368252

e-ISSN

15384357

ISSN

0004637X

First Page

823

Last Page

835

Issue

2 I

Volume

587

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