Flux Variations in Lines of Solar EUV Radiation Beyond Flares in Cycle 24

Bruevich, E.A.; Yakunina, G.V.

Авторы: Bruevich E.A., Yakunina G.V.
Сборник: arXiv [Solar and Stellar Astrophysics]
Серия: 1904
Том: 9439
Год издания: 2019
Место издания: Cornell University Library
Первая страница: 1
Последняя страница: 14
Аннотация: Studies in the extreme ultraviolet (EUV) and X-ray ranges of the solar spectrum are important due to the active role of radiation of these ranges in the formation of the Earth's ionosphere. Photons of the EUV range are completely absorbed in the upper layers of the Earth's atmosphere and induce the excitation, dissociation, and ionization of its different components and, finally, the atmospheric heating. From the archive data of the EUV Variability Experiment of the Solar Dynamics Observatory (SDO/EVE), we formed series of diurnal values of the background fluxes radiated beyond flares in the EUV lines HeII (30.4 nm), HeI (58.4 nm), CIII (97.7 nm), and FeXVIII (9.4 nm) in cycle 24 (from 2010 to 2017). These fluxes are compared to the corresponding values of the radio flux F10.7 at a wavelength of 10.7 cm and the background radiation flux F0.1-0.8 in the X-ray range between 0.1 and 0.8 nm measured onboard the GOES-15 satellite of the Geostationary Operational Environmental Satellite system. Comparative analysis has shown that the solar radiation in individual lines of the EUV range and the fluxes F10.7 and F0.1-0.8 are closely interrelated.
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Flux Variations in Lines of Solar EUV Radiation Beyond Flares in Cycle 24статья

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