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IJRSP Vol.36(2) [April 2007] >

Title: Role of coronal index of solar activity in long-term cosmic ray modulation
Authors: Tiwari, R K
Pandey, Manoj K
Shrivastava, Pankaj K
Keywords: Cosmic rays
Solar activity
Coronal index
Issue Date: Apr-2007
Publisher: CSIR
Abstract: The relationship between cosmic rays and coronal index of solar activity (CI) for the periods of negative (A < 0), mixed and positive (A > 0) polarities of the general magnetic field of sun has been analysed. In cosmic ray modulation, sunspot numbers are being generally used as a reliable solar parameter. In this analysis, coronal index has been used as a new solar parameter for long-term cosmic ray modulation. Negative and high correlations are found between CI and cosmic rays for the A > 0 epochs and A < 0 epochs of solar magnetic field. Significant differences are found between A > 0 and A < 0 epochs of solar magnetic field. Correlations are found to be poor during the mixed polarity years.
Page(s): 87-90
ISSN: 0367-8393
Source:IJRSP Vol.36(2) [April 2007]

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