Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...422.1067s&link_type=abstract
Astronomy and Astrophysics, v.422, p.1067-1072 (2004)
Astronomy and Astrophysics
Astrophysics
12
Waves, Sun: Corona, Sun: Oscillations
Scientific paper
Impulsively generated magnetohydrodynamic waves in a typical EUV solar coronal loop are studied numerically using a three-dimensional FLASH code. Our results reveal several 3D effects such as distinctive time signatures which are collected at a detection point inside the loop. A slow magnetosonic wave generates a significant variation in the mass density profile with a time scale of the order of 40 s. A fast kink wave affects the mass density, too, but its magnitude is much lower than in the case of a slow wave. Time scales which are associated with the fast kink wave are generally shorter than in the case of a slow wave; the former are in the range of a dozen or so seconds. Temporal signatures of a fast sausage wave reveal ˜ 5-s oscillations in the quasi-periodic phase. Impulses which are launched outside the loop excite several-second oscillations in the mass density. Time signatures depend on the position of the detection point; they are usually more complex further away from the exciter.
Kowal Grzegorz
Murawski Kris
Selwa Malgorzata
No associations
LandOfFree
Three-dimensional numerical simulations of impulsively generated MHD waves in solar coronal loops 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 Three-dimensional numerical simulations of impulsively generated MHD waves in solar coronal loops, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-dimensional numerical simulations of impulsively generated MHD waves in solar coronal loops will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1856356