The solar corona structures as inferred from July 11, 1991 total solar eclipse observation

Details The solar corona structures as inferred from July 11, 1991 total solar eclipse observation The solar corona structures as inferred from July 11, 1991 total solar eclipse observation

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.348..137s&link_type=abstract

In ESA, Proceedings of the First SOHO Workshop: Coronal Streamers, Coronal Loops, and Coronal and Solar Wind Composition p 137-1

Astronomy and Astrophysics

Astronomy

3

Astronomical Photography, Polarized Light, Solar Corona, Solar Eclipses, Space Observations (From Earth), Continuums, Current Sheets, Emission Spectra, Line Spectra, Solar Corpuscular Radiation

Scientific paper

During the 11 Jul. 1991 total solar eclipse (La Paz, Mexico), very complete photographic records of the linearly polarized light of the solar corona in continuum and in spectral line FeXIV 530.3 nm were obtained. Degree of polarization is considerably different for both the mentioned spectral regions. This follows, of course, most of all from a difference of the physical substance of polarization both in continuum and in emission spectral lines. The distinct variety of the white light degree of polarization according to the type of coronal structures is discussed. For example, the high degree of polarization is characteristic for the coronal streamers which in case of this eclipse were localized at unusually high solar latitudes. Position of the streamers is certainly reflected in an exceptional position of the heliospheric current sheet and, except of that, seriously casts doubts on the general validity of the Ludendorff's definition of the solar corona flattening.

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