Investigation of magnetic fields in solar active regions |
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Authors: | S I Gopasyuk O S Gopasyuk I P Zalesov D V Karkach V V Svistel’nikov |
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Institution: | (1) Crimean Astrophysical Observatory, National Academy of Sciences of Ukraine, Nauchnyi, Crimea, 334413, Ukraine |
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Abstract: | The magnetic-field structure in solar active regions outside spots is studied. The line-of-sight fields were measured using the new Crimean digital magnetograph in three spectral lines—Fe I 5253 Å, Fe II 5234 Å, and Ti I 5193 Å. Observations in the Fe II 5234 Å line indicate systematically higher field strengths than those in the Fe I 5253 Å line. The magnetic fluxes in 2″ elements are ~4.3×1018 Mx, ~4.6×1018 Mx, and ~6.2×1018 Mx according to the Fe I 5253 Å, Ti I 5193 Å, and FeII 5234 Å observations, respectively. Elements 2″–8″ in size make the largest contribution to the magnetic fluxes of active regions outside spots. |
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