Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pbeio..37...71h&link_type=abstract
Astrophysics Reports. Publications of the Beijing Astronomical Observatory, No. 37, p. 71 - 74 (2001). In: Proceedings of the Ei
Astronomy and Astrophysics
Astrophysics
Alfven Waves, Solar Corona, Landau Damping, Turbulence Heating
Scientific paper
The corona consists of the loop shape structure. Alfvén waves propagate to top of coronal loop from the convective zone along both feet of arch magnetic field. When both routes of the waves meet on the top of coronal loop, a strong plasma instability can be created and a Alfvén wave turbulence can be excited. Under certain conditions, Alfvén wave energy can be transferred to collisionless fast magnetosonic waves, and will be attenuated and dissipated by the new mode waves. When the thermal velocity of particles is close to the phase velocity of collisonless waves, the wave energy can largely be absorbed by particles, and the temperature in turbulence region will sharply be increased by the collisionless turbulence stochastic heating from Landau damping. The heating has a certain contribution to coronal mean temperature. It is an important mechanism to the rapid heating of corona.
Han Jiling
Tong Yi
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