Spectral Features to be Expected from Rotational and Expansional Motions in Fine Solar Structures
Abstract
The shapes of spectral features (lines) to be expected from rotating or expanding fine solar filaments, loops, and knots (oriented variously to the spectrograph slit) are given and discussed. Only the appearance of the lines in the spectrum (i.e., their orientation to the direction of dispersion and the shape of their area) is considered. It is shown that the observed inclination to the direction of dispersion of some spectral features can be produced by rotation but not by expansion. The observational evidences are given.
- Publication:
-
Solar Physics
- Pub Date:
- April 1975
- DOI:
- 10.1007/BF00154070
- Bibcode:
- 1975SoPh...41..329R
- Keywords:
-
- Solar Rotation;
- Solar Spectra;
- Spectral Signatures;
- Spectroheliographs;
- Fine Structure;
- H Alpha Line;
- Signature Analysis;
- Stellar Structure;
- Solar Physics;
- Spectral Feature;
- Observational Evidence;
- Spectrograph Slit;
- Solar Structure;
- Solar Filament