The mean magnetic field of the sun: Observations at Stanford

Details The mean magnetic field of the sun: Observations at Stanford The mean magnetic field of the sun: Observations at Stanford

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7726055s&link_type=abstract

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Physics

Magnetometers, Solar Magnetic Field, Sun, Solar Observatories, Stellar Structure

Scientific paper

A solar telescope was built at Stanford University to study the organization and evolution of large-scale solar magnetic fields and velocities. The observations are made using a Babcock-type magnetograph which is connected to a 22.9 m vertical Littrow spectrograph. Sun-as-a-star integrated light measurements of the mean solar magnetic field were made daily since May 1975. The typical mean field magnitude is about 0.15 gauss with typical measurement error less than 0.05 gauss. The mean field polarity pattern is essentially identical to the interplanetary magnetic field sector structure (seen near the earth with a 4 day lag). The differences in the observed structures can be understood in terms of a warped current sheet model.

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