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arXiv · 1504.07822

Fundamental-Mode Oscillations of Two Coronal Loops within a Solar Magnetic Arcade

Rekha Jain·Ram A. Maurya·B. W. Hindman
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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.

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Rekha Jain, Ram A. Maurya, B. W. Hindman. 2015-04-29. Fundamental-Mode Oscillations of Two Coronal Loops within a Solar Magnetic Arcade. https://doi.org/10.1088/2041-8205%2F804%2F1%2Fl19

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