Physics – Plasma Physics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9613807h&link_type=abstract
Journal of Geophysical Research, Volume 96, Issue A8, p. 13807-13813
Physics
Plasma Physics
7
Space Plasma Physics: Kinetic And Mhd Theory, Space Plasma Physics: Waves And Instabilities, Solar Physics, Astrophysics, And Astronomy: Corona, Interplanetary Physics: Mhd Waves And Turbulence
Scientific paper
Magnetohydrodynamic (MHD) surface waves may decay via a process called ``resonance absorption,'' which is a candidate for solar coronal heating. Recently, Hollweg, Yang, Cadez, and Gakovic studied the effects of velocity shear on the rate of resonance absorption of incompressible MHD surface waves. We extend the theory to a compressible but cold plasma, which is the case more applicable to the solar corona. We find that the rate of resonance absorption can be either increased or decreased significantly by velocity shear. We also find that there can exist resonances which lead to instability of the surface mode at values of the velocity shear below the Kelvin-Helmholtz threshold. However, the resonance instability usually occurs when the density ratio across the surface is less than about 0.1. The resonant instability may therefore not be important in the solar corona, though resonance absorption remains an attractive possibility for coronal heating.
No associations
LandOfFree
The effects of velocity shear on the resonance absorption of MHD surface waves: Cold plasma 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 The effects of velocity shear on the resonance absorption of MHD surface waves: Cold plasma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The effects of velocity shear on the resonance absorption of MHD surface waves: Cold plasma will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1738957