The separation velocity of emerging magnetic flux

Details The separation velocity of emerging magnetic flux The separation velocity of emerging magnetic flux

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..110...81c&link_type=abstract

(Solar Cycle Workshop, 1st, Pasadena, CA, Aug. 17-20, 1986) Solar Physics (ISSN 0038-0938), vol. 110, no. 1, 1987, p. 81-99.

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34

Bipolarity, Field Strength, Magnetic Flux, Solar Flux, Solar Magnetic Field, Velocity Distribution, Buoyancy, Computational Astrophysics, Photosphere

Scientific paper

The authors measure the separation velocity of opposite poles from 24 new bipoles on the Sun. They find that the measured velocities range from about 0.2 to 1 km s-1. The fluxes of the bipoles range over more than two orders of magnitude, and the mean field strength and the sizes range over one order of magnitude. The measured separation velocity is not correlated with the flux and the mean field strength of the bipole. The predicted separation velocity is about one order of magnitude higher than those measured, or else the flux tubes are almost vertical at the photosphere. There is no correlation between the measured separation velocity and the theoretical value. The predicted rising velocity is also higher than the vertical velocity near the line of inversion in emerging flux regions observed by other authors.

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