Correlative Analysis of Long Term Cosmic Ray Variation in Relation with Sunspot Number

Abstract

In this paper we will study about the relation between Cosmic ray Intensity(CRI) and Sunspot Number for solar cycle 22, 23 and 24.For this we have taken the data of cosmic ray intensity from various neutron Monitor stations .These neutron monitor stations are well maintained  stations and provide reliable cosmic ray data for variation study. A detail correlative study have been done by running cross correlation method. The cosmic ray intensity and sunspot number shows high and negative correlation among themselves. Sunspot number shows anti phase with Cosmic ray Intensity (CRI).

Keywords:- Cosmic –ray; Solar Cycle; Solar activity; Sunspot number