Modeling the crossover variability in a differentially rotating star

Details Modeling the crossover variability in a differentially rotating star Modeling the crossover variability in a differentially rotating star

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...385..896k&link_type=abstract

Astronomy and Astrophysics, v.385, p.896-899 (2002)

Astronomy and Astrophysics

Astrophysics

6

Stars: Magnetic Fields, Stars: Rotation, Sun: Rotation

Scientific paper

Reconstruction of phase-dependent crossover effect variations is performed for a differentially rotating star assuming that point-like magnetic charges are distrubuted under the stellar surface. Models adopting the solar differential rotation law and an exponential rotation law are considered and compared to the case of a rigidly rotating star. It is shown that neglect of differential stellar rotation leads to underestimation of the equatorial rotational velocity by ~ 2-5%.

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