Results 261 to 270 of about 10,569,280 (283)
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A new technique of observing the magnetic field of solar active regions
Chinese Astronomy and Astrophysics, 1986Abstract By fitting a new type of polarization detector after the entrance slit of a solar spectrograph, the two dimensional magnetic field of solar active regions can be obtained. Not only the field intensity, but also the longitudinal map is obtained quickly. The simultaneous observation of a few lines will also provide data on the structure of the
Lian-shu Cui, Guo-ping Ji, Cheng Fang
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A model of magnetic fields in a large-scale solar active region
Chinese Astronomy and Astrophysics, 2001The magnetic field configuration in a super-active region (i.e., a large, island-like delta -type spot) is simulated with a non-linear force-free field that varies slowly with time. Such a complex magnetic field exhibits the main observational characteristics of vector magnetic fields.
Ji Hai-sheng, Song Mu-tao
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Relation between the active region magnetic field and solar flares
Geomagnetism and Aeronomy, 2013A weak active region (NOAA 11158) appeared on the solar disk near the eastern limb. This region increased rapidly and, having reached the magnetic flux higher than 1022 Mx, produced an X-class flare. Only weak field variations at individual points were observed during the flare.
A. I. Podgorny +2 more
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Skinning process stability of the magnetic field in the solar active regions
Solar Physics, 1977Skinning process stability of the magnetic field in homogeneous plasma is studied. A set of magnetohydrodynamic equations is used. Dependence of electrical conductivity on the plasma parameters and radiation intensity in grey-body approximation are taken into account. The investigation is carried out on the model problems in linear approximation and by
V. S. Sokolov +3 more
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On the magnetic field line topology in solar active regions
Solar Physics, 1986The field lines of closed magnetic structures above the photosphere define a mapping from the photosphere to itself. This mapping is discontinuous, and the field line connectivity to the boundary can change discontinuously in response to continuous changes of field strength and direction, if field lines either end in a singular point of the field or ...
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Solar Active Region Coronal Magnetic Fields
Bulletin of the AAS, 2023Dale Gary +11 more
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Statistical mechanics of velocity and magnetic fields in solar active regions
Solar Physics, 1985A statistical mechanics of the velocity and magnetic fields is formulated for an active region plasma. The plasma subjected to the conservation laws emerges in a most probable state which is described by an equilibrium distribution function containing a lagrange multiplier for every invariant of the system.
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Methods for deriving the magnetic field in solar (radio) active regions
Astrophysics and Space Science, 2002In the present paper, in terms of the theory about the mechanisms of radio radiation, we have briefly classified, induced, summarized and reviewed the methods for deriving the magnetic field in the solar (radio) active regions.
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