Phase mixing of shear Alfven waves in a line-tied X-point geometry

Details Phase mixing of shear Alfven waves in a line-tied X-point geometry Phase mixing of shear Alfven waves in a line-tied X-point geometry

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh13b..02f&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SH13B-02

Other

7509 Corona, 7836 Mhd Waves And Instabilities (2149, 2752, 6050)

Scientific paper

One of the most fundamental question of solar physics is to understand the heating of the corona. Among other mechanisms phase mixing of Alfven waves appears to be a good candidate for explaining the fast energy dissipation. In a nonhomogeneous magnetic structure Alfven waves travel at different speeds thus creating cross-field gradients that are likely to enhance the damping rate of energy. Most phase mixing studies have focused on 1D geometry and none has considered the introduction of a null point. The present analysis thus extend the previous ones in a line-tied X-point geometry. By solving an initial value problem, we show that only the first stage of the decay (10-20 Alfven times) obeys the classical cubic law (Heyvaerts & Priest 1983). Later on a diffusive orchestration of the oscillations leads to an eigenmode behaviour with an almost viscosity-independant dissipation rate.

Affiliated with

Also associated with

No associations

Rating

Phase mixing of shear Alfven waves in a line-tied X-point geometry 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 Phase mixing of shear Alfven waves in a line-tied X-point geometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase mixing of shear Alfven waves in a line-tied X-point geometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-756898