Physics
Scientific paper
Apr 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...84..371b&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 84, April 1983, p. 371-376.
Physics
6
Angular Velocity, Dynamo Theory, Fraunhofer Lines, Photosphere, Solar Rotation, Solar Spectra, Chromosphere, Least Squares Method, Reference Atmospheres
Scientific paper
From 63 mostly unblended Fraunhofer lines measured along the solar east-west diameter the rotation velocity has been determined. The mean value is 1986 km s-1. The velocity decreases with the optical depth in the photosphere. Over a range of 700 km the difference of the velocities is 41 m s-1 for the Holweger-Müller atmosphere or 34 m s-1 for the Harvard Smithsonian reference atmosphere.
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