Strong (4000g) Transverse Fields in Delta Spots

Details Strong (4000g) Transverse Fields in Delta Spots Strong (4000g) Transverse Fields in Delta Spots

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.5105z&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #51.05; Bulletin of the American Astronomical Society, Vol. 24, p.814

Astronomy and Astrophysics

Astronomy

Scientific paper

We have measured transverse fields in the neutral line area between spots of opposite polarity in several delta spots (spots of opposite polarity in one penumbra). The measurement was made by scanning the spectrograph slit across the area and recording the 5250 Angstroms line and the slit jaw image on videotape. Transverse field was selected by rotating a linear polarizer. The splitting of the transverse sigma component, measured with a ruler, was as high as high as 0.3|AA, corresponding to more than 4000 gauss, stronger than the longitudinal field in the component spots. This demonstrates the strong, sheared transverse fields along the neutral lines of these spot configurations. The splitting can be used to calibrate the vector magnetograph. We have found strong sheared fields of 3000g or more in every delta spot measured.

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