Limb darkening variations.
Abstract
Variations of the solar limb darkening as measured in the line wing of the Fe I line at λ5250 have been observed at Mount Wilson Observatory. The measurements were made over the visible solar disk excluding those points where the magnetic field strength exceeded 5 Gauss. This exclusion of magnetic points should reduce the effects of faculae upon the derived limb darkening curve. The observations cover 160 days during 1980 and show evidence of variations of 0.002 I0 over timescales of thirty days.
- Publication:
-
NASA Conference Publication
- Pub Date:
- May 1984
- Bibcode:
- 1984NASCP2310..165B
- Keywords:
-
- Limb Darkening:Sun;
- Sun:Limb Darkening;
- Limb Darkening;
- Line Spectra;
- Magnetic Flux;
- Solar Activity;
- Solar Limb;
- Spectrum Analysis;
- Sun;
- Faculae;
- Least Squares Method;
- Magnetic Signatures;
- Solar Atmosphere;
- Standard Deviation;
- Stellar Luminosity;
- Solar Physics