Alurkar, S. K. ; Degaonkar, S. S. ; Bhonsle, R. V. (1983) Power spectrum of brightness temperature fluctuations derived from solar eclipse observations at 2.8 GHz Proceedings of the Indian Academy of Sciences - Earth & Planetary Sciences, 92 (1). pp. 57-61. ISSN 0253-4126
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Official URL: http://www.ias.ac.in/j_archive/epsci/92/1/57-61/vi...
Abstract
In this paper we report on the MEM power spectrum analysis of brightness temperature fluctuations observed at 2.8 GHz during the total solar eclipse of 16 February 1980. The observed periodicities range from 3.5 min to 64 min. These periodicities may arise due to spatial and/or temporal variations in the solar radio emission. The observed periodicities imply presence of scale sizes ranging from 70,000 to 600,000 km assuming that the brightness fluctuations arise because of spatial variation only. On the other hand, if these fluctuations are due to temporal variation, the observed periodicities correspond well to predicted modes of solar global oscillations.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Solar Microwave Flux; Solar Oscillations; Solar Eclipse Measurements; Power Spectrum; Brightness Temperature Fluctuations; Maximum Entropy Method |
| ID Code: | 89592 |
| Deposited On: | 28 Apr 2012 12:47 |
| Last Modified: | 19 May 2016 04:06 |
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