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Register a new userGlobal Transients in ultraviolet and red-infrared ranges from data of the Universitetsky-Tatiana-2 satellite
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Detectors of fast flashes (duration of 1-128 ms) in near ultraviolet (240-400 nm) and red-infrared (>610 nm) ranges on board the Universitetsky-Tatiana-2 satellite have measured transient luminous events global distribution. Events with number of photons 10^20-5{cdot}10^21 radiated in the atmosphere are uniformly distributed over latitudes and longitudes. Events with number of photons more than 5{cdot}10^21 are concentrated near the equator above continents. Measured ratio of photons number radiated in red-IR range to photons number radiated in UV related to excitation of nitrogen molecular indicates a high altitude (>50 km) of the atmospheric electric discharges responsible for the observed transients. Series of every minute transients (from 3 to 16 transients in the series) were observed. The detection of transients out of thunderstorm area, in cloudless region- sometimes thousands km away of thunderstorms is remarkable. The obtained data allow us to assume that transient events are not only consequences of lightning in event-by-event way but they are the result of long distance influence of thunderstorm electric activity causing breakdowns in the upper atmosphere (at altitudes >50 km).
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