Spatial,spectral, and polarization properties of radio emission of the 3 February, 1983 proton flare |
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Authors: | L. M. Bakunin V. G. Ledenev V. P. Nefedyev N. N. Potapov G. Ya. Smolkov A. M. Uralov G. P. Chernov V. V. Fomichev V. P. Melnikov T. S. Podstrigach O. V. Epifanova A. V. Khokhlov Sh. Enome |
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Affiliation: | (1) Siberian Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (SibIZMIR), USSR Academy of Sciences, 33, 664033 Irkutsk, U.S.S.R.;(2) IZMIRAN, Moscow Region, Troitsk, U.S.S.R.;(3) NIRFI, Gorky, U.S.S.R.;(4) Saratov University, Saratov, U.S.S.R.;(5) Research Institute of Atmospherics Nagoya University Toyokawa Observatory, Japan |
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Abstract: | A complex analysis in different radio ranges of the evolutionary features of the 3 February, 1983 flare (0543-0619-0812 UT) has shown that the flare is a prolonged ( 15 hr) process of energy release and particle acceleration that gradually extends to still greater zones of the active region (AR) magnetosphere in both area and altitude. Observations from the Siberian Solar Radio Telescope obtained at = 5.2 cm indicate that the flare was preceded by quasi-periodical brightness enhancements with a period of 6–7 min of two sources of size 20 and with a brightness temperature of 107 K.During the flare maximum phase, a type II burst with harmonic structure and the subsequent type FC II continuum with fine structure were both observed in the meter band. It has been found that zebra-structure appearances correlate with the H-flare kernel brightenings at loop tops.The observed characteristics of the type II burst and of the type FC II continuum treated in this paper are interpreted in terms of the complex flare flow structure, involving forward and backward shock waves. |
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