Abstract
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.
Original language | English |
---|---|
Article number | 86 |
Number of pages | 11 |
Journal | Astrophysical Journal |
Volume | 785 |
Issue number | 2 |
DOIs | |
Publication status | Published - 28 Mar 2014 |
Keywords
- Sun: flares
- Sun: oscillations
- Sun: radio radiation
- Waves