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Information × Registration Number 0206U009327, 0103U002153 , R & D reports Title Magnetic fields dinamics in Solar active regions popup.stage_title Head Gopasyuk O.S., Registration Date 03-01-2007 Organization Scientific-research institute "Crimean astrophysical observatory" popup.description2 In sunspot umbra the magnetic energy of oscillations exceeds their kinetic energy by a factor up to 1000 (if the plasma density is 10-4 kg/m3). A radius of cross-section of magnetic tubes forming a sunspot is the greatest near the solar surface and is approximately the same as radius of a sunspot umbra. In deeper layers it decreases enough rapidly. Product Description popup.authors popup.nrat_date 2020-04-02 Close