Observations and interpretation of the slowly varying component of solar radio emission at decameter wavelengths
โ Scribed by Ch. V. Sastry; K. S. Dwarkanath; R. K. Shevgaonkar; V. Krishan
- Publisher
- Springer
- Year
- 1981
- Tongue
- English
- Weight
- 517 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0038-0938
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โฆ Synopsis
We have observed the slowly varying component of solar radio emission at a frequency of 34.5 MHz with half power beam widths of 26'/40' in the east-west and north-south directions, respectively. It is found that the observed brightness temperatures vary within the limits of 0.3x 106 K to 1.5 x 106 K, and the average half power widths of the brightness distribution on the Sun is about 3RG. Thermal emission from coronal regions of various electron densities and temperatures with and without the magnetic field has been computed and compared with the observed results.
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The spectrum of the S-component of solar radio emission has been investigated at 4 GHz, 17 GHz, 35 GHz, 70 GHz, and 94 GHz. The spectrum for a spot group which appeared late in March 1966 (McMath plage No. 8223), seems to be fiat at the frequencies above about 35 GHz. This implies that the emission
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