6th International Virtual Congress (IVC-2019) And Workshop.  International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

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.


  1. The 27-Days Cosmic Ray Intensity Variation during Solar Minimum 23 and 24. R. Modzelewska., M.V. Alania, Solar Phys, 286, 593-607, (2013)
  2. Modulation in Cosmic ray During the Declining and Minimum Solar Activity Period of Solar Cycle 23. B.K. Tiwari., B.R. Ghormare., P.K. Shrivastava., D.P. Tiwari, Res. J. Physical Sci.,2(2), 9-12, (2014)
  3. Long term modulation of cosmic rays and inferable electromagnetic state in solar modulating regions K. Nagashima and I. Morishitha, Planetary and space Sciences,28(2), 117 (1980)
  4. Galactic cosmic ray radiation hazard in the unusual extended solar between solar 23 and 24. N.A. Schwadron., A.J. Body., K. Kozarev., M. Golightly., H. Spence., L.W. Townsend., and M. Owens, Space Weather, 8,S00E04,doi:10.1029,2010SW000567, (2010)
  5. Understant the behavior of the heliospheric magnetic field and the solar wind during the unusual solar minimum between cycle 23 and 24. Zhao L., Fisk L., Solar Phys.,274, 379 (2011)
  6. Study of variation in Cosmic ray Intensity due to Solar-Interplanetary activity between 1996-2013, B.K. Tiwari., B.R. Ghormare., P.K. Shrivastava., D.P. Tiwari, Res. J. Physical Sci.,2(3), 4-8, (2014)