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Mapping Analysis of Solar Radio Burst at 17GHz on 1992 October 27 |
| YU Xing-Feng1,2;YAO Jin-Xing1 |
| 1Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008
2National Astronomical Observatory, Chinese Academy of Sciences
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| Cite this article: |
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YU Xing-Feng, YAO Jin-Xing 2000 Chin. Phys. Lett. 17 621-622 |
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Abstract The contour maps at 17 GHz on the 1992 October 27 solar burst are analysed. Using a nonthermal inhomogeneous model of the radio source, the variations of calculated source size with time are basically consistent with the observation of maps. The variations of calculated brightness temperature with a distance ρ displaced from the project center are in better agreement with the observation of map at 0 1 : 45 : 29 : 889 UT. The calculation shows that the characterizing magnetic field gradient αβ at the peak of 17GHz is about 2, magnetic strength B is about 737G with the magnetic field Bm of the core being 2000G. However in order to measure the coronal magnetic field accurately, it is necessary to obtain radio-imaging data at more frequencies.
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| Keywords:
95.85.Bh
96.60.-j
96.60.Pb
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Published: 01 August 2000
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