Evidence for a lower limit of solar magnetic field strengths

Details Evidence for a lower limit of solar magnetic field strengths Evidence for a lower limit of solar magnetic field strengths

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....73l..19w&link_type=abstract

Astronomy and Astrophysics, vol. 73, no. 3, Mar. 1979, p. L19, L20.

Astronomy and Astrophysics

Astrophysics

9

Chromosphere, Field Strength, Solar Atmosphere, Solar Magnetic Field, Magnetic Flux, Magnetic Measurement, Thresholds, Zeeman Effect

Scientific paper

Magnetograph observations of the solar quiet network at the disk center with a 4-arcsec aperture are reported. The results obtained for 37 Ca II K features indicate a lower limit of 20 G for the solar magnetic fields. A lower limit of 2.4 x 10 to the 18th Mx is placed on the magnetic flux. A true diameter of 390 to 550 km is estimated for the smallest flux tubes, and a field threshold of 200 G is determined for pores. The results are compared with previous observations.

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