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B A Khrenov is a Professor of Skobeltsyn Institute of Nuclear Physics (SINP), Lomonosov Moscow State University. He has an MS, PhD and DSc in Physics and Mathematics. He is a Leading Staff Researcher, SINP MSU, Moscow, Russia. He did his PhD “High energy muons in EAS” in 1962 and his Doctor of Sciences (DSc), Professor in Physics and Mathematics, “Experimental study of EAS high energy muons by underground magnetic spectrometer” in 1987 and has published many papers.


In flights of four satellites: Tatiana; Tatiana-2; Chibis and Vernov (RELEC before launching) near UV flashes in wide range of energies (from 1 K Joule to M Joule in UV) were studied by detectors capable to measure temporal profile of the event in range of 1- 128 ms. Among all data on those flashes the most interesting are observations in Tatiana-2 and Vernov satellites series of short flashes (1 ms duration) correlated in trace of 128 ms and in several minutes of satellite flight. Series of flashes are strongly correlated with thunderstorm regions. Orbits of Tatiana’s and Vernov satellites are close to geomagnetic field while Chibis orbit crosses geomagnetic field. Series of flashes were not registered by Chibis detector. This difference gives evidence for correlation of flash series with geomagnetic field. A qualitative interpretation of data on series of UV flashes is considered. UV flashes are suggested to be generated by lightning electromagnetic pulses partly going through ionosphere to the magnetosphere as whistlers. Whistlers’ tracks are correlated to geomagnetic lines. They have a chance to come back to the atmosphere where they produce secondary flashes which could be detected by satellite following geomagnetic lines. Longer series (during seconds and up to minutes) also directed along geomagnetic field lines are due to additional effect of lightning high rate in specific thunderstorm regions.