Alurkar, S. K. ; Bhonsle, R. V. ; Degaonkar, S. S. ; Calla, O. P. N. ; Raju, G. (1983) Multifrequency spectra of solar brightness temperature derived from eclipse observations Journal of Astrophysics and Astronomy, 4 (4). pp. 289-293. ISSN 0250-6335
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Official URL: http://www.ias.ac.in/jarch/jaa/4/289-293.pdf
Related URL: http://dx.doi.org/10.1007/BF02714922
Abstract
Changes in solar radio-brightness temperature were derived at 2.8,19.3 and 22.2 GHz from the observations of radio flux during the total eclipse of 1980 February 16. High-resolution MEM spectra of the brightness temperature fluctuations at the three frequencies showed periodicities ranging from 3.5 min to 128 min. Between 3.5 min and 14.6 min there are several periodicities of comparable significance common to the three operating frequencies. If the corresponding variations in brightness temperature are assumed to result from spatial variations in the solar radio emission, the observed periodicities imply scale sizes in the range 76000 km to 320000 km.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Sun; Radio Brightness Temperature; Maximum Entropy Method |
| ID Code: | 3391 |
| Deposited On: | 11 Oct 2010 08:51 |
| Last Modified: | 16 May 2016 14:12 |
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