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Dependence of the Helioshphere and Cosmic ray (CR) Modulation on Solar activity

Author Affiliations

  • 1Department of Physics,A.P.S.University, Rewa, MP, INDIA
  • 2 Department of Physics, Rewa Engineering College, Rewa, MP, INDIA
  • 3 Department of Physics, Model Science College, Rewa, MP, INDIA

Res. J. Physical Sci., Volume 2, Issue (5), Pages 8-11, September,4 (2014)


Solar variability control the structure of the heliosphere and produce changes in cosmic ray intensity (CRI) both on short-term as well as on long–term basis through the level of solar activity. Based on the observation from Omniweb data centre for solar- interplanetary data activity and yearly mean count rate of cosmic ray intensity (CRI) variation data from Moscow neutron monitors (Rc=2.42 GV) during the period of 23/24. It is observed that sunspot number, 10.7 cm solar radio flux, velocity of solar wind and the strength and turbulence of the interplanetary magnetic field with count rate of cosmic ray intensity are inverse correlated.


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