Computer Science – Sound
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aipc..537..216d&link_type=abstract
WAVES IN DUSTY, SOLAR, AND SPACE PLASMAS. AIP Conference Proceedings, Volume 537, pp. 216-223 (2000).
Computer Science
Sound
Image Processing, Ultraviolet, Sound Waves
Scientific paper
High cadence TRACE data (JOP 83) in the 171 Å bandpass are used to report on several examples of outward propagating oscillations in the footpoints of large diffuse coronal loop structures close to active regions. The disturbances travel outward with a propagation speed between 70 and 160 km s-1. The variations in intensity are of the order of 2%-4%, compared to the background brightness and these get weaker as the disturbance propagates along the structure. From a wavelet analysis at different positions along the structures, periods in the 200-400 seconds range are found. It is suggested that these oscillations are slow magneto-acoustic waves propagating along the loop, carrying an estimated energy flux of 4×102 ergs cm-2 s-1. .
de Moortel Ineke
Ireland Jack
Walsh Robert W.
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