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Fine Structure and Formation Mechanism of a Sunspot Bipolar Light Bridge in NOAA AR 13663
The Astrophysical JournalBipolar light bridges (BLBs) are bright regions located between sunspot umbrae of opposite magnetic polarity. They are typically characterized by strong magnetic fields and intense flows, which are believed to be closely associated with major solar ...
Fangfang Qiao +5 more
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Statistical Overview of Long-lived Active Regions Observed across Multiple Carrington Rotations
The Astrophysical JournalThe study of solar active regions (ARs) is of central importance to a range of fundamental science, as well as the practical applications of space weather. AR emergence and life cycles are two areas of particular interest, yet the lack of consistent full-
Emily I. Mason, Kara L. Kniezewski
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A Titov–Démoulin Type Eruptive Event Generator for β > 0 Plasmas
The Astrophysical Journal, 2023 We provide exact analytical solutions for the magnetic field produced by prescribed current distributions located inside a toroidal filament of finite thickness.
Igor V. Sokolov, Tamas I Gombosi
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Intermittency Spectra of the Magnetic Field in Solar Active Regions
, 2010 20 pages, 9 ...
Abramenko, Valentyna, Yurchyshyn, Vasyl
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A statistical study on property of spatial magnetic field for solar active region [PDF]
Astrophysics and Space Science, 2014 6figures,22 pages.
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The Astrophysical JournalWe study the evolution of electric currents during the emergence of magnetic flux in the solar photosphere and the differences exhibited between solar active regions of different Hale complexity classes. A sample of 59 active regions was analyzed using a
Ioannis Kontogiannis +1 more
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The Contribution of Solar Magnetic Regions to the Residual Meridional and Zonal Flows
The Astrophysical JournalWe estimate the contributions to the solar-cycle variation of solar meridional and zonal flows near the surface expected solely from local magnetic regions.
D. C. Braun
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Effect of Solar Activity Regions on the Interplanetary Magnetic Field.
The Astrophysical Journal, 1963 A correlation between the solar activity regtons and the Pioneer V interplanetary magnetic field measurements is presented for the months February through May, 1960. The usual 27-day coronal periodicity can be seen in this interval. The corresponding vaiues of coronal index and field magnitude are plotted against each other and the ratio of the field ...
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The Magnetic Fields at Different Levels in the Active Regions of the Solar Atmosphere [PDF]
Symposium - International Astronomical Union, 1971 The strengths of the longitudinal magnetic fields recorded at different depths of active regions with a double magnetograph of the Crimean Astrophysical Observatory are compared.The recordings of the magnetic fields were made in the lines Fe Iλ5250Å, Ca Iλ6103Å, Na I D1, BIIλ4554Å, Mg Iλ5184Å, Hα, Hγ, Hδ.It is shown, that there is a close correlation ...
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Evolutionary Dynamics of Counterhelical Magnetic Flux Ropes
The Astrophysical JournalUpon interaction, a pair of magnetic flux ropes can merge to form a new pair, each consisting of opposite helicity along their axis. Magnetic helicity along such new structures may annihilate and release the energy of the azimuthal magnetic field.
Ying-Dong Jia +9 more
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