The Equatorial Rotation Velocity of the Photosphere is Measured to be the Same as Sunspots.
Abstract
The equatorial rotation rate of the photosphere was measured at the Stanford Solar Observatory during 1976-1978 using spectroscopic data. The following points are made: scattered light has a large influence and must be taken into account properly; when this is done we find that the rotation rate from Doppler shifts agrees very well with the rate found for sunspots; and short-term fluctuations in rotation rate (i.e., from day to day) are less than + or - 15 m/s and are thus within observational errors. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1978
- Accession Number
- ADA062062
Entities
People
- J. M. Wilcox
- L. Svalgaard
- P. H. Scherrer
Organizations
- Stanford University