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Title: FORWARD MODELING OF GYROSYNCHROTRON INTENSITY PERTURBATIONS BY SAUSAGE MODES
Authors: Reznikova, Veronika ×
Antolin, P
Van Doorsselaere, Tom #
Issue Date: 2014
Publisher: IOP PUBLISHING LTD
Series Title: ASTROPHYSICAL JOURNAL vol:785 issue:2
Article number: 86
Abstract: To determine the observable radio signatures of the fast sausage standing wave, we examine gyrosynchrotron (GS) emission modulation using a linear three-dimensional magnetohydrodynamic model of a plasma cylinder. Effects of the line-of-sight angle and instrumental resolution on perturbations of the GS intensity are analyzed for two models: a base model with strong Razin suppression and a low-density model in which the Razin effect was unimportant. Our finding contradicts previous predictions made with simpler models: an in-phase variation of intensity between low (f < f peak) and high (f > f peak) frequencies is found for the low-density model and an anti-phase variation for the base model in the case of a viewing angle of 45°. The spatially inhomogeneous character of the oscillating emission source and the spatial resolution of the model are found to have a significant effect on the resulting intensity.
ISSN: 0004-637X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Plasma-astrophysics Section
× corresponding author
# (joint) last author

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