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Title: FUNDAMENTAL-MODE OSCILLATIONS OF TWO CORONAL LOOPS WITHIN A SOLAR MAGNETIC ARCADE

We analyze intensity variations, as measured by the Atmospheric Imaging Assembly in the 171 Å 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 two-dimensional waveguide instead of a one-dimensional one.
Authors:
;  [1] ;  [2]
  1. School of Mathematics and Statistics, University of Sheffield, S3 7RH (United Kingdom)
  2. JILA, University of Colorado, Boulder, CO 80309-0440 (United States)
Publication Date:
OSTI Identifier:
22518986
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 804; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ENERGY SPECTRA; MASS; OSCILLATIONS; SOLAR CORONA; SOLAR FLARES; SUN; VARIATIONS