Observation of oscillations in coronal loops

Details Observation of oscillations in coronal loops Observation of oscillations in coronal loops

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...355l..23d&link_type=abstract

Astronomy and Astrophysics, v.355, p.L23-L26 (2000)

Astronomy and Astrophysics

Astrophysics

130

Magnetohydrodynamics (Mhd), Sun: Activity, Sun: Corona, Sun: Oscillations

Scientific paper

On March 23rd 1999, a set of TRACE observations in the 171 Alfvén A (Fe Ix) bandpass was made of active region AR 8496. A wavelet analysis of a bright loop-footpoint to the south west of this active region displays outward propagating perturbations with periods 180-420 seconds at approximately 70-165 km s-1. We suggest that these oscillations are slow magneto-acoustic waves propagating along the loop, carrying an estimated energy flux of 4 x 102 ergs cm-2 s-1.

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