Dynamics of the spatial distribution of electrons and their gyrosynchrotron emission characteristics in a collapsing magnetic trap |
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| Authors: | L V Filatov V F Melnikov S P Gorbikov |
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| Institution: | 1. Radiophysical Research Institute, ul. Bol’shaya Pecherskaya 25/12a, GSP-51, Nizhni Novgorod, 603600, Russia
2. Central (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, Pulkovskoe sh. 65, St. Petersburg, 196140, Russia
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| Abstract: | The dynamics of the distribution of nonthermal electrons, injected into a collapsing magnetic trap, has been considered. The electron energy and pitch angle nonstationary spatial distributions in an extensive magnetic trap have been obtained for the first time for different laws of inhomogeneous magnetic field evolution in this trap by numerically solving the Fokker-Planck kinetic equation. The gyrosynchrotron emission intensity has been calculated for the obtained electron spatial distributions. It has been indicated that energetic electrons are effectively accumulated and accelerated at the top of a collapsing trap due to the first-order Fermi and betatron acceleration mechanisms at certain rates of variations in the magnetic field and background plasma density. |
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