Abstract
Abstract We believe, that conventional magnetograms of active regions give no means of extracting adequate information about the magnetic field energy in the vicinity of a neutral line, especially in areas where fine-structure opposite-polarity strong fields are most close together and mixed. Magnetic broadening measurements of the magnetosensitive line profile would make up tangibly for this deficiency. To accomplish this, we suggest that the spectral line profile steepness ∂I/∂λ should be measured, considering just this parameter to be most suitable for measurement and to ensure sufficiently high sensitivity of measurements. In this paper it is shown that in the line wing it is possible to determine two parts, for which the magnetic field influence upon the line steepness is the largest and opposite in sign. This can be used to separate “nonmagnetic” sources of line broadening. The line FeII 6149.2A is of interest for measuring the profile steepness when using the spectrograph. With a measurement sensit...
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