Jess, D., Mathioudakis, M., Erdelyi, R., Verth, G., McAteer, R.T.J. and Keenan, F.P. (2008) Discovery of spatial periodicities in a coronal loop using automated edge-tracking algorithms. Astrophysical Journal, 680 (2). pp. 1523-1531. ISSN 1538-4357
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Abstract
A new method for automated coronal loop tracking, in both spatial and temporal domains, is presented. Applying this technique to TRACE data, obtained using the 171 Å filter on 1998 July 14, we detect a coronal loop undergoing a 270 s kink-mode oscillation, as previously found by Aschwanden et al. However, we also detect flare-induced, and previously unnoticed, spatial periodicities on a scale of 3500 km, which occur along the coronal loop edge. Furthermore, we establish a reduction in oscillatory power for these spatial periodicities of 45% over a 222 s interval. We relate the reduction in detected oscillatory power to the physical damping of these loop-top oscillations.
| Item Type: | Article |
|---|---|
| Copyright, Publisher and Additional Information: | © 2008. The American Astronomical Society. This is an author produced version of a paper published in 'Astrophysical Journal'. Uploaded in accordance with the publisher's self-archiving policy. |
| Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
| Depositing User: | Mrs Megan Hobbs |
| Date Deposited: | 12 Mar 2010 18:11 |
| Last Modified: | 08 Feb 2013 17:00 |
| Published Version: | http://dx.doi.org/10.1086/587735 |
| Status: | Published |
| Publisher: | Institute of Physics |
| Refereed: | Yes |
| Identification Number: | 10.1086/587735 |
| Related URLs: | |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/10530 |
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