Interpretation of solar microwave C type burst spectra in terms of magnetic nonhomogeneity |
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Authors: | Jinxing Yao Xingfeng Yu Fengsi Wei |
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Institution: | (1) Purple Mountain Observatory, Chinese Academy of Sciences, 210008 Nanjing, China;(2) Laboratory of Numerical Study of Heliospheric Physics, Chinese Academy of Sciences, 100080 Beijing, China |
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Abstract: | The solar radio spectra of the gyro-synchrotron radiation without absorption from mildly relativistic non-thermal electron
have been presented using the model with the spherical symmetric nonhomogeneity. These spectra have the following features:
(i) Twists and turns of the spectra, which appear at the joint between the medium and high frequencies, (ii) Flux density
drop at the lower frequencies. Even if there are no absorption in the radio sources, flux density drop at the lower frequencies
is still present because of magnetic nonhomogeneity. (iii) These theoretical spectra belong to C type. This provides us a
new interpretation for the observed solar burst C type spectra.
Project supported by the National Natural Science Foundation of China. |
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Keywords: | spherical symmetric nonhomogeneity gyro-synchrotron spectra twists and turns of spectra flux density drop at lower frequencies solar radio burst C type spectra |
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