Absolute spectroscopic determination of solar rotation

Details Absolute spectroscopic determination of solar rotation Absolute spectroscopic determination of solar rotation

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...61....3s&link_type=abstract

Solar Physics, vol. 61, Feb. 1979, p. 3-8. Research supported by the Research Corp.

Physics

4

Astronomical Spectroscopy, Doppler Effect, Solar Rotation, Solar Spectra, Angular Velocity, Circular Polarization, Frequency Shift, Limb Darkening, Line Spectra, Red Shift

Scientific paper

Absolute measurements of the dependence of solar rotation rate upon latitude were made during the period June 17-20, 1977. The solar potassium line at 7699 A was observed by using an atomic-beam resonance scattering apparatus. The measured sidereal equatorial rotation rate is 13.5 + or - 0.5 deg day. The results are in agreement with those of Howard and Harvey (1970). This technique will be used in a long-term program to monitor the equatorial rotation rate.

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