Stellar coronas.
Abstract
The present state of knowledge about stellar coronal heating is reviewed, noting that such heating is due to mechanical-energy loss by viscous dissipation of wave energy. Wave modes in stellar photospheres are described along with the generation of mechanical-energy fluxes, early predictions of the physical parameters of stellar coronas, and more recent computations of expected soft X-ray fluxes from coronas. Results are discussed for Astronomical Netherlands Satellite observations of soft X radiation from the Sirius system and Capella as well as for UV observations of coronal lines in the spectra of several other stars.
- Publication:
-
Memoires of the Societe Royale des Sciences de Liege
- Pub Date:
- 1975
- Bibcode:
- 1975MSRSL...9..369D
- Keywords:
-
- Atmospheric Heating;
- Coronas;
- Energy Dissipation;
- Plasma Heating;
- Plasma Waves;
- Stellar Atmospheres;
- Astronomical Netherlands Satellite;
- High Temperature Plasmas;
- Photosphere;
- Propagation Modes;
- Radiant Flux Density;
- Stellar Models;
- Stellar Spectra;
- X Rays;
- Astrophysics