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Title: Cosmic Ray Density Gradient & Its Dependence on the North-South Asymmetry in Solar Activity
Authors: Badruddin
Yadav, R S
Yadav, N R
Issue Date: Dec-1985
Publisher: NISCAIR-CSIR, India
Abstract: A systematic and detailed analysis of the diurnal anisotropy on geomagnetically quiet days has been performed using the cosmic ray intensity data for the period 1964-1979 for neutron monitors at Deep River, Leeds, Rome and Tokyo. The days have been separated according to the polarity of the IMF on that day. Appreciable difference in the amplitude and phase is found for towards and away polarity days, particularly, during the years when the solar activity is high and the north-south asymmetry is also quite large. These results on geomagnetically quiet days show some better relationship with the expected results, especially, the behaviour of the time of maximum; however, these did not show any good relationship with the expected result when all days in a year are considered. The results of the study indicate that the north-south asymmetry in solar activity is influential in determining the latitude gradient of cosmic ray flux.
Page(s): 151-156
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.14(6) [December 1985]

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