Color of the Corona Continuum of July 11, 1991
| Autor: | I. V. Mironova, V. V. Popov, I. S. Kim, A. R. Osokin, N. L. Krusanova |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Continuum (design consultancy) Astrophysics Electron Expected value 01 natural sciences Color index Corona Spectral line Geophysics Space and Planetary Science Coronal plane Physics::Space Physics 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Geomagnetism and Aeronomy. 60:441-445 |
| ISSN: | 1555-645X 0016-7932 |
| DOI: | 10.1134/s0016793220040076 |
| Popis: | The color of the coronal continuum was determined from observations in order to search for manifestations of coronal expansion. A brief review of studies determining the color of the coronal continuum finds that the previously obtained results are inconsistent. The color index for the coronal continuum is defined. The necessity of the use of a relative color index is substantiated. RCI estimates of expected values are made with respect to the electron speed. A two-dimensional RCI distribution for the corona of July 11, 1991, was constructed. Comparison of the distribution with the coronal structure illustrates the absence of uniformity of the coronal and photospheric spectra and reveals reddening with distance over the entire corona at all positional angles. It is noted that the RCI distribution for the corona on July 11, 1991, and that earlier obtained for the corona on March 29, 2006, are the first confirmations of theoretical calculations on the shift of the continuum spectrum to the red side due to electron fluxes propagating from the Sun throughout the corona. |
| Databáze: | OpenAIRE |
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