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| Paper: |
Eclipse High-precision Linear Polarimetry of the Inner White-light Corona: Polarization Degree |
| Volume: |
437, Solar Polarization Workshop 6 |
| Page: |
181 |
| Authors: |
Kim, I. S.; Lisin, D. V.; Popov, V. V.; Popova, E. V. |
| Abstract: |
Quasi-space totality sky brightness, the portable
coronagraph-polarimeter, uniformity of a polarizer transmission
for each point of the image, use of 24 orientations of a
polarizer, and a specific algorithm for data reduction allowed to
get the 2D distributions of the linear polarization degree in the
green and red spectral intervals with actual accuracy of 1–2% for
the corona of March 29, 2006. The diffuse and structural
components are revealed in the polarization degree images. Polar
plumes are selected in the distributions. The systematical
difference of 5–15% between the green and red polarization
degrees is revealed for both diffuse and structural components.
Abnormal polarization degrees of 65% are found in the green
distribution for the features with the size of 8–30″
below the top of the NW large-scale helmet streamer. It is noted
that researches of the electron component of coronal plasma should
be carried out in selected spectral intervals that are free of any
absorption and emission lines. |
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