Abstract
Using a detector of near ultra-violet (UV) emission (wavelength range 300–400 nm) [1] onboard the Universitetsky-Tatiana satellite with an orbit height of 950 km and inclination of 81° we have detected and studied short UV flashes [2–5]. In this paper the observed UV flashes are classified according to the type of their time profiles, and the times of emission intensity rise and decay are investigated in every flash. Using the data on time profiles it turned out to be possible to estimate the flash energy in the atmosphere even in case of saturation of a signal measuring channel at the maximum of emission. The energy spectrum of observed flashes is estimated. Time and energy characteristics of the flashes are important for choosing a model of development of electric discharges in the upper atmosphere that are responsible for observed emission.
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Original Russian Text © G.K. Garipov, P.A. Klimov, V.S. Morozenko, M.I. Panasyuk, B.A. Khrenov, 2011, published in Kosmicheskie Issledovaniya, 2011, Vol. 49, No. 5, pp. 403–410.
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Garipov, G.K., Klimov, P.A., Morozenko, V.S. et al. Time and energy characteristics of UV flashes in the atmosphere: Data of the Universitetsky-Tatiana satellite. Cosmic Res 49, 391–398 (2011). https://doi.org/10.1134/S0010952511050066
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DOI: https://doi.org/10.1134/S0010952511050066