Solar rotation from a number of Fraunhofer lines

Details Solar rotation from a number of Fraunhofer lines Solar rotation from a number of Fraunhofer lines

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...93..155p&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 93, June 1984, p. 155-170.

Physics

18

Fraunhofer Lines, Solar Rotation, Solar Spectra, Solar Atmosphere, Solar Velocity, Spectrum Analysis

Scientific paper

Solar differential rotation for 1982 - 83 obtained at the double pass spectrograph of the McMath telescope at Kitt Peak, is presented for lines of Fe, Mg, Na, K, Si, and O in the wavelength interval λλ3820 - 10827. The results are analyzed by representations in Legendre polynomials and a power series. The differential rotation is very close to the result obtained by Howard and Harvey in 1966 - 68 at Mt. Wilson but with a slightly greater amplitude. The authors find a mean equatorial rate of rotation of 1.977 km s-1. Day to day variations are observed in the equatorial zone; a stable rate of rotation is observed outside of the sunspot zone.

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