@Article{SimoesCost:2010:GyEmAn,
author = "Simoes, P. J. A and Costa, J. E. R.",
affiliation = "CRAAM, BR-01302907 Sao Paulo, Brazi and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Gyrosynchrotron Emission from Anisotropic Pitch-Angle Distribution
of Electrons in 3-D Solar Flare Sources",
journal = "Solar Physics",
year = "2010",
volume = "266",
number = "1",
pages = "109--121",
month = "Set.",
keywords = "Flares: models, Flares: relation to magnetic field, Flares:
spectrum, Radio bursts: microwave (mm, cm), TERRESTRIAL KILOMETRIC
RADIATION, MICROWAVE-BURSTS, MAGNETIC-FIELD, LOSS CONE, RAY,
PLASMA, GENERATION, INJECTION, SPECTRA, CORONA.",
abstract = "We present calculations, made for the first time, of the
gyrosynchrotron emission by mildly relativistic electrons with
anisotropic pitch-angle distribution using a realistic magnetic
loop model in three dimensions. We investigated the intensity,
spectral index of the optically thin region of the spectrum, the
spatial morphology and the dependency on the source position on
the solar disk. The method to describe a three-dimensional source
and the procedure to perform the calculations are presented. We
have modified the Ramaty's gyrosynchrotron code to allow the
evaluation of anisotropic pitch-angle electron distributions, as
described in the complete formalism. We found that anisotropic
electron distributions affect the intensity of the radiation,
spatial morphology and spectrum of spatially resolved sources.
However, the spatially integrated spectrum of the emission seems
to be insensitive to the electron pitch-angle distribution, as the
magnetic field inhomogeneity smooths out the effects of the
anisotropic distribution in the produced radiation, in contrast to
homogeneous sources.",
doi = "10.1007/s11207-010-9596-2",
url = "http://dx.doi.org/10.1007/s11207-010-9596-2",
issn = "0038-0938 and 1573-093X",
language = "en",
targetfile = "simoes.pdf",
urlaccessdate = "20 maio 2024"
}