Investigating the rotation of sun as a star, using the Fourier analysis methodology

Details Investigating the rotation of sun as a star, using the Fourier analysis methodology Investigating the rotation of sun as a star, using the Fourier analysis methodology

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993kfnt....9...37p&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 9, no. 1, p. 37-41.

Physics

Fourier Analysis, Fraunhofer Lines, Power Spectra, Solar Rotation, Stellar Rotation, Angular Velocity, Bessel Functions, Solar Spectra

Scientific paper

The paper discusses the feasibility of the detection of Carroll's zeros in the power spectrum of the sun as a star and the effect of the sun's differential rotation on their positions. The first Carroll's zero is detected at the frequency 0.368 +/- 0.009 s/km in the region of the spectrum of the sun as a star 1195.2 - 1214.048 nm, which corresponds to the synodic equatorial rotation velocity 1.71 +/- 0.05 km/s in the solid-body approximation and 1.80 +/- 0.05 km/s in the case of differential rotation.

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