Tereshchenko V.D., Kalitenkov N.V., Tereshchenko V.A., Chernyakov S.M. Radio waves generation by Cherenkov-Vavilov process in the lower polar ionosphere. Physics of auroral phenomena, 27th Annual Apatity Seminar, 2-5 March, 2004, Abstracts, Preprint PGI 04-05-74015, Apatity, KSC RAS, 2004, P.37.

Radio waves generation by Cherenkov-Vavilov process in the lower polar ionosphere

V.D. Tereshchenko1, N.V. Kalitenkov2, V.A. Tereshchenko1, S.M. Chernyakov1

1Polar Geophysical Institute, Murmansk, 183010, Russia; E-mail: vladter@pgi.ru
2Murmansk State Technical University, Murmansk, 183010, Russia

Low-frequency radiowaves of natural origin were detected with ground and spacecraft receivers. In the present paper the results of radioemission registrations in the auroral zone on the frequencies 2.5-3.5 MHz are presented. A possibility of such a radioemission generation by flows of charged particles at the heights of the polar mesosphere and lower thermosphere of the Earth (70 - 200 km) was investigated. A model of three-component partially ionized magnetic-active plasma was used for solving of the problem. It was considered that particles of a bunch or a blob, which was moving in the ionosphere, radiated coherently due to the Cherenkov-Vavilov radiation mechanism.