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Solar Variability and their Impact on the Helioshphere and Cosmic Rays

Author Affiliations

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

Res. J. Physical Sci., Volume 2, Issue (6), Pages 5-8, October,4 (2014)


The structure of the heliosphere controls by the solar outputs and their variability, produce changes in cosmic ray intensity. Observation based on the data taken from Omniweb data centre for solar- interplanetary data and yearly mean count rate of cosmic ray intensity (CRI) variation data from Oulu, Moscow and Kiel neutron monitors during 1996-2014. It is observed that slow decline of solar cycle 23 and slow rise of solar cycle 24 resulted prolonged of low solar activity which lasted about 2006 to 2009 with 2008 and 2009 being sun is remarkably quiet, therefore solar minimum between cycle 23 and 24 was very extended and deep in contrast to previous solar minima’s and the strength of the interplanetary magnetic field has been falling off to new low levels, reduces the GCR entering inner- heliosphere and it is high anti-correlation between sunspot number and GCR flux. It is also found that correlation between the count rate of cosmic ray intensity with solar indices and heliospheric parameters.


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