Amplification of compressional MHD waves in systems with forced entropy oscillations

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

14 pages, 4 figures, Accepted to Physical Review E

Scientific paper

10.1103/PhysRevE.76.046404

The propagation of compressional MHD waves is studied for an externally driven system. It is assumed that the combined action of the external sources and sinks of the entropy results in the harmonic oscillation of the entropy (and temperature) in the system. It is found that with the appropriate resonant conditions fast and slow waves get amplified due to the phenomenon of parametric resonance. Besides, it is shown that the considered waves are mutually coupled as a consequence of the nonequilibrium state of the background medium. The coupling is strongest when the plasma $\beta \approx 1$. The proposed formalism is sufficiently general and can be applied for many dynamical systems, both under terrestrial and astrophysical conditions.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Amplification of compressional MHD waves in systems with forced entropy oscillations 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 Amplification of compressional MHD waves in systems with forced entropy oscillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplification of compressional MHD waves in systems with forced entropy oscillations will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-657873

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.