Abstract
On March 23rd 1999, a set of TRACE observations in the 171 Angstrom (Fe rx) bandpass was made of active region AR 8496. A wavelet analysis of a bright loop-footpoint to the south west of this active region displays outward propagating perturbations with periods 180-420 seconds at approximately 70-165 km s(-1). We suggest that these oscillations are slow magneto-acoustic waves propagating along the loop, carrying an estimated energy flux of 4 x 10(2) ergs cm(-2) s(-1).
Original language | English |
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Pages (from-to) | L23-L26 |
Number of pages | 4 |
Journal | Astronomy & Astrophysics |
Volume | 355 |
Issue number | 2 |
Publication status | Published - Mar 2000 |
Keywords
- magnetohydrodynamics (MHD)
- Sun : activity
- Sun : corona
- Sun : oscillations
- WAVES
- MECHANISMS
- PLUMES