Rao, U. R. ; Sarabhai, V. (1961) Time variations of directional cosmic ray intensity at low latitudes. I. Comparison of daily variation of the intensity of cosmic rays incident from East and West Proceedings of the Royal Society A: Mathematical, Physical & Engineering Sciences, 263 (1312). pp. 101-117. ISSN 1364-5021
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Official URL: http://rspa.royalsocietypublishing.org/content/263...
Related URL: http://dx.doi.org/10.1098/rspa.1961.0149
Abstract
A study has been conducted at Ahmedabad during 1957 and 1958 of the time variations of meson intensity incident from east and west at 45° to the vertical. A characteristic difference of about 6 h in the diurnal time of maximum for the east and west directions is observed to occur on many days and this has been interpreted as signifying an anisotropy of primary radiation caused by a source outside the influence of the geomagnetic field. However, there are many days on which the daily variation has a maximum near noon for both directions. On such days the predominant influence is that of a local source situated within the influence of the geomagnetic field. The local source is associated with geomagnetically disturbed days. Long-term changes in the daily variation are found to be similar for the east, vertical and west directions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The Royal Society. |
| ID Code: | 73048 |
| Deposited On: | 30 Nov 2011 04:02 |
| Last Modified: | 17 Jul 2012 07:16 |
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