Forward modeling of gyrosynchrotron intensity perturbations by sausage modes
Date
28/03/2014Metadata
Show full item recordAbstract
To determine the observable radio signatures of the fast sausagestanding wave, we examine gyrosynchrotron (GS) emission modulation usinga linear three-dimensional magnetohydrodynamic model of a plasmacylinder. Effects of the line-of-sight angle and instrumental resolutionon perturbations of the GS intensity are analyzed for two models: a basemodel with strong Razin suppression and a low-density model in which theRazin effect was unimportant. Our finding contradicts previouspredictions made with simpler models: an in-phase variation of intensitybetween low (f <fpeak) and high (f > fpeak) frequencies is found for the low-density model and ananti-phase variation for the base model in the case of a viewing angleof 45°. The spatially inhomogeneous character of the oscillatingemission source and the spatial resolution of the model are found tohave a significant effect on the resulting intensity.
Citation
Reznikova , V E , Antolin , P & Van Doorsselaere , T 2014 , ' Forward modeling of gyrosynchrotron intensity perturbations by sausage modes ' , Astrophysical Journal , vol. 785 , no. 2 , 86 . https://doi.org/10.1088/0004-637X/785/2/86
Publication
Astrophysical Journal
Status
Peer reviewed
ISSN
0004-637XType
Journal article
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