Physics
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...83..305m&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 83, March 1983, p. 305-320.
Physics
25
Magnetic Field Configurations, Magnetostatic Fields, Plasma Resonance, Solar Corona, Stellar Models, Sunspots, Condensation, Density Distribution, Frequency Shift, Photointerpretation, Plasma Density, Solar Physics
Scientific paper
A realistic magneto-hydrostatic model of a coronal condensation over a bipolar spot group is developed and compared with the earlier interpretation of the Zebra patterns by the concept of double resonance. It is determined that the frequency drift of the Zebra stripes over a longer time cannot be explained by a change of state of the plasma as is done in previous models. The magneto-hydrostatic model utilizes a mechanism for this frequency drift which is based on a helical beam of electrons forming fronts that excite radiation at places of double resonances. Conditions are found which produce drifting Zebra stripes using considerations of the field and density configuration. It is found that structures of longer duration and absorptions arise from more or less overlapping stripe segments, which are excited by the fronts following one another in a beam of sufficient great length. It is also shown that the second stripe system of other drift direction found by Slottje (1972) arises from lateral splitting of the beam.
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