White-Light Observations and Polarimetric Analysis of the Solar Corona During the Eclipse of 1 August 2008
| Autor: | G. I. Kushtal, V. I. Skomorovsky, V. D. Trifonov, V. G. Fainshtein, G. P. Mashnich, Y. S. Zagaynova, S. A. Chuprakov |
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| Rok vydání: | 2011 |
| Předmět: |
Physics
Brightness business.industry Astrophysics::High Energy Astrophysical Phenomena Polarimetry Astronomy and Astrophysics Coronal loop Polarizer Polarization (waves) Coronal radiative losses Corona law.invention Telescope Optics Space and Planetary Science law Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics business Astrophysics::Galaxy Astrophysics |
| Zdroj: | Solar Physics. 277:267-281 |
| ISSN: | 1573-093X 0038-0938 |
| DOI: | 10.1007/s11207-011-9910-7 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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