Physics
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010soph..267..203f&link_type=abstract
Solar Physics, Volume 267, Issue 1, pp.203-216
Physics
Electron Density, K- And F-Corona, White-Light Corona
Scientific paper
SOHO/LASCO data were used to obtain the latitudinal and radial distributions of the brightness of the K- and F-corona in the period of 1996 - 2007, and their solar-cycle variations were studied. Then an inversion method was employed to obtain the radial distributions of the electron density N e( R, θ) for various latitude values on the coronal images. Our values of N e( R, θ) are in good agreement with the findings of other authors. We found that in an edge-on streamer belt the electron density, like the K-corona brightness, varies with distance more slowly in the near-equatorial rays than in near-polar regions. We have developed a method for assessing the maximum values of the electron density at the center of the face-on streamer belt in its bright rays and depressions between them. Not all bright rays observed in the face-on streamer belt are found to be associated with an increased electron density in them. Mechanisms for forming such rays have been suggested.
Fainshtein V.. G.
Kashapova Larisa K.
Tsivileva D. M.
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