Momentum transport through the chromosphere.
Abstract
Chromosphere and ionosphere have in common that they contain weakly ionized plasmas. There are other similarities, but also striking differences. A most important one lies in the ratio of neutral-ion coupling time to the propagation time of an Alfvén wave through the respective regions. In the ionosphere this ratio is large, in the chromosphere very small. This has the consequence that only a.c. Pedersen currents exist in the latter region. Their properties are derived and their role for chromospheric heating and lifting of cool and dense plasma out of the chromosphere into the corona, to form spicules, is discussed.
- Publication:
-
Study of the Solar-Terrestrial System
- Pub Date:
- September 1992
- Bibcode:
- 1992ESASP.346...23H
- Keywords:
-
- Chromosphere;
- Collisions;
- Dense Plasmas;
- Ionic Collisions;
- Ionospheres;
- Magnetohydrodynamic Waves;
- Momentum Transfer;
- Spicules;
- Ionization;
- Mathematical Models;
- Plasma Physics;
- Solar Magnetic Field;
- Solar Wind;
- Solar Physics