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Fundamental-Mode Oscillations of Two Coronal Loops within a Solar Magnetic Arcade
- Publication Year :
- 2015
-
Abstract
- We analyse intensity variations, as measured by the Atmospheric Imaging Assembly (AIA) in the 171 {\AA} passband, in two coronal loops embedded within a single coronal magnetic arcade. We detect oscillations in the fundamental mode with periods of roughly 2 minutes and decay times of 5 minutes. The oscillations were initiated by interaction of the arcade with a large wavefront issuing from a flare site. Further, the power spectra of the oscillations evince signatures consistent with oblique propagation to the field lines and for the existence of a 2-D waveguide instead of a 1-D one.
- Subjects :
- Astrophysics - Solar and Stellar Astrophysics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1504.07822
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/2041-8205/804/1/L19