Accession Number : AD0710690

Title :   THE DETERMINATION OF THE MAGNETIC FIELD STRENGTH FROM DIFFERENT ABSORPTION LINES,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Guseinov,M. Dzh.

Report Date : APR 1970

Pagination or Media Count : 23

Abstract : On the basis of spectrograms, obtained with the echellette spectrograph of the tower solar telescope of the Crimean astrophysical observatory, the absolute values of the magnetic field strength H are determined from different absorption lines. It is found, that the magnetic field strength changes from one line to another and depends both on the Rowland intensity and on the excitation potential of the lower level of the line. There is a dependence between H and mean optical depths mean tau of lines. The field is very inhomogenous with depth and H increases, in the main, with the increase of mean tau. But in a separate case, there were both positive and negative gradients of the field into the depth of a spot. It has been determined that in the period from September 2 up to September 5, 1961 in the spot-leader of group No. 251 the coming up to the surface of the magnetic field took place, and during September 5-7, - the expansion of the field, mainly. (Author)

Descriptors :   (*SOLAR SPECTRUM, MAGNETIC FIELDS), CHROMOSPHERE, INTENSITY, LINE SPECTRA, SUNSPOTS, ZEEMAN EFFECT, USSR

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE