Small-scale magnetic field diagnostics outside sunspots: Comparison of different methods |
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Authors: | D N Rachkovsky T T Tsap V G Lozitsky |
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Institution: | (1) Crimean Astrophysical Observatory, UA-98409 Nauchny, Crimea, Ukraine;(2) Kyiv University Astronomical Observatory, Observatorna St. 3, UA-04053 Kyiv, Ukraine |
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Abstract: | We analyse different observational data related to the problem of intrinsic magnetic field strength in small-scale fluxtubes
outside sunspots. We conclude that the kG range of fluxtube fields follows from not only classical line ratio method, but
also from other old and new techniques. For the quiet regions on the Sun, the most probable mode of such fields has a magnetic
field strength of 1.2–1.5 kG assuming the rectangular field profile. To best interpret the observations, a weak background
field between fluxtubes should be assumed, and its magnetic field strength is expected to increase with the filling factor
of fluxtubes. The alternative point of view about subkilogauss fluxtube fields is critically examined, and possible sources
of different conclusions are presented. |
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Keywords: | Sun magnetic fluxtubes kG magnetic fields |
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