Observation of oscillations in coronal loops

Authors
De Moortel, I Ireland, J Walsh, RW
Citation
I. De Moortel et al., Observation of oscillations in coronal loops, ASTRON ASTR, 355(2), 2000, pp. L23-L26
Citations number
15
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
355
Issue
2
Year of publication
2000
Pages
L23 - L26
Database
ISI
SICI code
0004-6361(200003)355:2<L23:OOOICL>2.0.ZU;2-M
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 pr opagating perturbations with periods 180-420 seconds at approximately 70-16 5 km s(-1). We suggest that these oscillations are slow magneto-acoustic wa ves propagating along the loop, carrying an estimated energy flux of 4 x 10 (2) ergs cm(-2) s(-1).