Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...404l...1k&link_type=abstract
Astronomy and Astrophysics, v.404, p.L1-L4 (2003)
Astronomy and Astrophysics
Astrophysics
54
Magnetohydrodynamics (Mhd), Waves, Sun: Activity, Sun: Corona, Sun: Oscillations, Sun: Uv Radiation
Scientific paper
Quasi-periodic EUV disturbances simultaneously observed in 171 Å and 195 Å TRACE bandpasses propagating outwardly in a fan-like magnetic structure of a coronal active region are analysed. Time series of disturbances observed in the different bandpasses have a relatively high correlation coefficient (up to about 0.7). The correlation has a tendency to decrease with distance along the structure: this is consistent with an interpretation of the disturbances in terms of parallel-propagating slow magnetoacoustic waves. The wavelet analysis does not show a significant difference between waves observed in different bandpasses. Periodic patterns of two distinct periods: 2-3 min and 5-8 min are detected in both bandpasses, existing simultaneously and at the same distance along the loop, suggesting the nonlinear generation of the second harmonics.
DeLuca Edward E.
Golub Leon
King Daniel B.
McClements K. G.
Nakariakov Valery M.
No associations
LandOfFree
Propagating EUV disturbances in the Solar corona: Two-wavelength observations 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 Propagating EUV disturbances in the Solar corona: Two-wavelength observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propagating EUV disturbances in the Solar corona: Two-wavelength observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1819875