Small-scale Magnetic Field Diagnostics outside Sunspots: Comparison of Different Methods

Journal of astrophysics and astronomy

T. T. Tsap¹  D. N. Rachkovsky¹  V. G. Lozitsky2² 

[1] Crimean Astrophysical Observatory, Nauchny, Crimea, UA-98409, Ukraine.$$;Kyiv University Astronomical Observatory, Observatorna St. 3, Kyiv, UA-04053, Ukraine.$$

关键词: Sun;    magnetic fluxtubes;    kG magnetic fields.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown