Title: Lyra observations of two oscillation modes in a single flare
Authors: Van Doorsselaere, Tom ×
De Groof, A
Zender, J
Berghmans, D
Goossens, Marcel #
Issue Date: Oct-2011
Publisher: University of Chicago Press for the American Astronomical Society
Series Title: Astrophysical Journal vol:740 issue:2 pages:-
Article number: 90
Abstract: We analyze light curves from the LYRA irradiance experiment on board PROBA2 during the flare of 2010 February 8. We see both long- and short-period oscillations during the flare. The long- period oscillation is interpreted in terms of standing slow sausage modes; the short-period oscillation is thought to be a standing fast sausage mode. The simultaneous presence of two oscillation modes in the same flaring structure allows for new coronal seismological applications. The periods are used to find seismological estimates of the plasma-beta and the density contrast of the flaring loop. Also the wave mode number is estimated from the observed periods.
ISSN: 0004-637X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Plasma-astrophysics Section
× corresponding author
# (joint) last author

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science