Height variation of the magnetic field in sunspot umbrae

Details Height variation of the magnetic field in sunspot umbrae Height variation of the magnetic field in sunspot umbrae

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001kfnt...17..496g&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, vol. 17, no. 6, p. 496-502

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Scientific paper

We present the results of investigations of the magnetic field structure in four regularly shaped sunspots. The longitudinal magnetic fields and brightness were measured in the line Fe I lambda 525.3 nm by means of the double magnetograph of the Crimean Astrophysical Observatory. All three components of the magnetic field vector were reconstructed from the line-of-sight component. The vertical gradient of the magnetic field and beam angle of the magnetic field lines were calculated. Their values were 0.03 mT/km and 29(0) , respectively. The inference was derived that the beam angle of the magnetic lines and the vertical gradient of the magnetic field must always correspond to each other. Conclusions which follow from this result are briefly discussed.

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