Generation of coronal electric currents due to convective motions on the photosphere. II - Resonance and phase mixing of Alfven waves

Details Generation of coronal electric currents due to convective motions on the photosphere. II - Resonance and phase mixing of Alfven waves Generation of coronal electric currents due to convective motions on the photosphere. II - Resonance and phase mixing of Alfven waves

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...277..404s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 277, Feb. 1, 1984, p. 404-414. Sponsorship: Ministry of Education of Japan.

Physics

37

Convective Heat Transfer, Coronal Loops, Electric Current, Magnetohydrodynamic Waves, Photosphere, Solar Physics, Amplitudes, Boundary Value Problems, Energy Dissipation, Oscillations, Plasma Resonance, Propagation Velocity

Scientific paper

A study is made on the resonance of Alfven waves in a coronal loop excited at its footpoints by the photospheric convective motion. The driving velocity field at the footpoints is modeled by random wave trains. The nonuniformity of the Alfven velocity in the loop is taken ito account so that the Alfven surface wave resonance and the phase mixing of Alfven body waves take place. The derived dissipation rate of wave energy, which turns out to be sufficient to heat the corona, depends neither on the values of resistivity and viscosity, in agreement with Ionson (1978, 1982) nor on whether the Alfven velocity is uniform or not. The velocity amplitude in the loop, however, depends on the resistivity and the viscosity as well as on the degree of nonuniformity. When the phase mixing is in operation, the expected velocity amplitude is smaller than in the case of uniform medium and lies within the range of the linear treatment of waves.

Affiliated with

Also associated with

No associations

Rating

Generation of coronal electric currents due to convective motions on the photosphere. II - Resonance and phase mixing of Alfven waves 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 Generation of coronal electric currents due to convective motions on the photosphere. II - Resonance and phase mixing of Alfven waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Generation of coronal electric currents due to convective motions on the photosphere. II - Resonance and phase mixing of Alfven waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1857662