Evershed Effect and Magnetic Field in Penumbral Finestructures
Abstract
A highly resolved penumbra spectrum obtained from the Locarno telescope on July 4, 1982 is studied. It is observed that line core shifts are predominant in dark spectrum streaks and line asymmetries in bright spectrum streaks. The relationship between line widths and continuum brightness is investigated. A continuous dependence of these line parameters on the continuum brightness is detected; decreasing continuum brightness results in increasing line widths. Explanations for this increase are discussed. The effect of line widths/brightness variations on magnetic field fluctuations in penumbral fine structures is examined.
- Publication:
-
High Resolution in Solar Physics
- Pub Date:
- 1985
- DOI:
- 10.1007/BFb0022412
- Bibcode:
- 1985LNP...233..198W
- Keywords:
-
- Fine Structure;
- Penumbras;
- Solar Magnetic Field;
- Solar Spectra;
- Brightness;
- Continuous Spectra;
- Spectral Line Width;
- Solar Physics