Relation between the Spatial Distribution and Spectral Index of Superthermal Electron Distribution in Solar cm-Radio Sources |
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| Authors: | L V Yasnov M Karlický |
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| Institution: | 1.St. Petersburg State University,St. Petersburg,Russia;2.Astronomical Institute,Academy of Sciences of the Chech Republic,Ondrejov,Chech Republic |
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| Abstract: | A series of solar cm-radio bursts are analyzed by a new inverse method estimating spatial changes of the superthermal electron
distribution in solar cm-radio burst sources. It is found that the measure of the spatial change of superthermal electrons
in the radio source ν
n
is always greater than that for the magnetic field ν
B
and it is linearly dependent on the spectral index of the electrons δ as ν
n
≈0.5δ. This relation is explained in the simplified flare-loop model integrating the analytical solutions of the Fokker – Planck
equation. The mean value of ν
B
is found to be 0.36±0.04, which is very close to the value of ν
B
=0.38±0.02 derived from the dependence of the magnetic field strength on the height in the active region measured by RATAN-600. |
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| Keywords: | |
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