Physics
Scientific paper
Mar 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978raf....20.1302k&link_type=abstract
(Radiofizika, vol. 20, no. 9, 1977, p. 1302-1309.) Radiophysics and Quantum Electronics, vol. 20, no. 9, Mar. 20, 1978, p. 899-9
Physics
Magnetohydrodynamics, Photosphere, Solar Granulation, Solar Magnetic Field, Chromosphere, Solar Physics, Solar Spectra, Sunspots, Toroidal Plasmas
Scientific paper
Measurements of magnetic-field components in the solar photosphere are reviewed. Data are examined which demonstrate that the pattern of the smallest photospheric magnetic elements can be identified with the photospheric granulation network and that a magnetic field of at least 100 Oe is concentrated in the dark intergranular network near the center of the solar disk. Direct magnetic-field measurements in solar prominences are reported which yield a value of 10 to 100 Oe for the longitudinal component of the photospheric magnetic field. Broadening of chromospheric magnetic elements relative to photospheric elements is attributed to magnetic expansion of elements that 'float' in the atmosphere, and magnetic arches are shown to be typical chromospheric field configurations. Sunspots are considered as steady-state process that dissipate as a result of MHD instabilities; the complex system of twisted magnetic ropes in the outer umbra and penumbra of a spot is explained in terms of dissipation of the basic magnetic-field configuration. Some properties of supergranules and 'giant' granules are briefly discussed.
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