White-Light Observations and Polarimetric Analysis of the Solar Corona During the Eclipse of 1 August 2008

• Published in: Solar physics Vol. 277; no. 2; pp. 267 - 281
• Main Authors: Skomorovsky, V. I., Trifonov, V. D., Mashnich, G. P., Zagaynova, Y. S., Fainshtein, V. G., Kushtal, G. I., Chuprakov, S. A.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.04.2012; Springer Nature B.V
• Subjects: Astrophysics and Astroparticles; Atmospheric Sciences; Corona; Physics; Physics and Astronomy; Solar eclipses; Solar physics; Space Exploration and Astronautics; Space Sciences (including Extraterrestrial Physics; K- and F-corona brightness; Polarization degree; Eclipse observations; Corona, eclipse
• ISSN: 0038-0938; 1573-093X
• DOI: 10.1007/s11207-011-9910-7

In order to study the solar corona during eclipses, a new telescope was constructed. Three coronal images were obtained simultaneously through a single objective of the telescope as the coronal radiation passed through three polarizers (whose transmission directions were turned 0°, 60°, and 120° in the chosen direction); one image was obtained without a polarizer. The telescope was used to observe the solar corona during the eclipse of 1 August 2008. We obtained the distributions of polarization brightness, K-corona brightness, the degree of K-corona polarization and the total polarization degree; the polarization direction, depending on the latitude and radius in the plane of the sky, was also obtained. We calculated the radial distributions of electron density depending on the latitude. The properties of all these distributions were compared for different coronal structures. We determined the temperature of the coronal plasma in different coronal structures assuming hydrostatic equilibrium.