The solar chromosphere
Abstract
Observational data on the solar chromosphere (SC) are compiled in tables and graphs and illustrated with sample spectra and H-alpha filtergrams. The visible structure of the SC in active and quiet regions is discussed; the mean SC structure determined from spectroscopic observations is characterized; and particular attention is given to plages and network, the role of magnetic fields, small-scale structure, and the structure and dynamics of the high SC. From the similarity in the thermal structures of magnetic and nonmagnetic SC regions it is inferred that slow-mode MHD waves are the most likely mechanism of energy transport, although high-angular-resolution observations are required to verify this hypothesis. The implications of recent stellar-chromosphere observations for SC models are briefly considered.
- Publication:
-
Spectroscopy of Astrophysical Plasmas
- Pub Date:
- 1987
- Bibcode:
- 1987soap.conf..125N
- Keywords:
-
- Chromosphere;
- Solar Atmosphere;
- Solar Spectra;
- Brightness Temperature;
- Calcium;
- Faculae;
- Filtergrams;
- H Lines;
- K Lines;
- Resonance Lines;
- Solar Granulation;
- Solar Magnetic Field;
- Thermodynamic Equilibrium;
- Solar Physics