Determining Drivers of Coronal Loop Oscillations from Trend Signatures

Details Determining Drivers of Coronal Loop Oscillations from Trend Signatures Determining Drivers of Coronal Loop Oscillations from Trend Signatures

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21012005w&link_type=abstract

American Astronomical Society Meeting 210, #120.05; Bulletin of the American Astronomical Society, Vol. 39, p.245

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Data presented by Schrijver et al. (2002) and Aschwanden et al. (2002) show that global kink mode coronal loop oscillations are instigated by one of two mechanisms: CMEs/EIT waves and filament destabilizations. Each of the oscillations examined demonstrates a decay phase mapped onto an underlying ``trend,'' which can be classified as either ``linear'' or ``periodic,'' depending on whether the trend represents a fundamental or secondary mode. In 20 of the 23 cases for which it was possible to identify a loop oscillation driver, a definite trend classification was made. 10 of the 12 CME/EIT wave drivers definitively result in linear trends; 8 of the 11 filament destabilizations definitively result in periodic trends. For each type of trend, only one case flatly contradicts the expected result (i.e. only one CME/EIT wave displays a distict periodic trend and only one filament destabilization a distinct linear trend). These results suggest that CME/EIT waves tend to act as drivers that excite the fundamental mode across the entire loop, while filament destabilizations may affect only part of the loop, resulting in the excitation of secondary modes.
This work was funded by NASA Grant NAG513494.

Affiliated with

Also associated with

No associations

Rating

Determining Drivers of Coronal Loop Oscillations from Trend Signatures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Determining Drivers of Coronal Loop Oscillations from Trend Signatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determining Drivers of Coronal Loop Oscillations from Trend Signatures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1034914