THE CONNECTION OF SOLAR-WIND VELOCITY WITH AN INTENSITY OF ENERGETIC ELECTRONS TRAPPED BY GEOMAGNETIC-FIELD

According to data from a number of satellites (''Prognoz'', ''Intercosmos'' and ''Cosmos'' series) a quantitative connection is established between values of electron fluxes with energy >30 keV on magnetopause and (with energies 0.03-15 Mev) in the outer radiation belt, and values of the solar wind velocity and K-index. Temporal relationships of this effect are also determined. In particular the delay of an appearance of energetic electrons in the magnetosphere relative to the maximum of the solar wind is determined. The explanation of these effects is discussed in the frame work of the theory of radial diffusion. A radial diffusion coefficient is estimated on the basis of values of time delays for energetic electrons peak fluxes on the magnetopause and in the outer radiation belt relative to the maximum of the solar wind velocity.