Forward modeling of gyrosynchrotron intensity perturbations by sausage modes
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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.
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 . DOI: 10.1088/0004-637X/785/2/86
© 2014. The American Astronomical Society. All rights reserved. Printed in the U.S.A. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1088/0004-637X/785/2/86
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