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Observation of higher harmonic coronal loop oscillations View all abstracts by submitter

Ineke De Moortel   Submitted: 2007-04-12 12:25

A sequence of TRACE 171 Å observations taken on 13 May 2001 shows evidence of flare-induced, transverse coronal loop oscillations (Schrijver et al 2002, Aschwanden et al 2002). We revisit this particular data set and present evidence of the presence of spatially resolved higher harmonics in the transverse loop displacements. The oscillations are identified as the second harmonic, fast MHD, kink waves (periods of 577 - 672 sec), with higher harmonics (250 - 346 sec) also present. The apparent absence of the fundamental mode and the fact that it is the second harmonic (P_2) which dominates the oscillatory behaviour of this particular loop may shed more light on either the excitation and/or the damping mechanism(s) of flare-induced, transverse loop oscillations.

Authors: I. De Moortel, C.S. Brady
Projects: None

Publication Status: ApJ (accepted)
Last Modified: 2007-04-12 16:33
Go to main E-Print page  The effect of the solar corona on the attenuation of small-amplitude prominence oscillations. I. Longitudinal magnetic field  An estimate of p-mode damping by wave leakage.  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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