Discovery of Spatial Periodicities in a Coronal Loop Using Automated Edge-Tracking Algorithms

David Jess, Mihalis Mathioudakis, Robert Erdélyi, Gary Verth, James McAteer, Francis Keenan

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1523-1531
JournalThe Astrophysical Journal
Volume680
Issue number2
DOIs
Publication statusPublished - Jun 2008

Fingerprint Dive into the research topics of 'Discovery of Spatial Periodicities in a Coronal Loop Using Automated Edge-Tracking Algorithms'. Together they form a unique fingerprint.

Cite this