The Structure of the Solar Transition Region and Inner Corona.
Abstract
Emission gradient curves for extreme ultraviolet resonance lines of lithium-like ions were constructed from spectroheliograms of quiet limb regions and a north polar coronal hole observed with the Harvard experiment on Skylab. The observations are interpreted with simple coronal models. The coronal models are extended downward and the calculated emission from them is compared with averaged, network and cell line intensities to derive models in a quiet region and a coronal hole. The energy balance implications of the models are examined. In the transition region both conduction and radiation are important in determining the energy balance in network regions in both quiet areas and coronal holes. Additional energy sources are required in the network in coronal holes. In the corona, the energy losses, and hence the requirements for mechanical heating, are the same in quiet regions and coronal holes.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1977
- Bibcode:
- 1977PhDT........14M
- Keywords:
-
- Physics: Astronomy and Astrophysics;
- Emission Spectra;
- Solar Corona;
- Solar Limb;
- Spectroheliographs;
- Stellar Structure;
- Coronagraphs;
- Skylab Program;
- Solar Energy;
- Ultraviolet Spectrometers;
- Solar Physics