• Shirish K. Persai
• Mukesh K. Jothe
• Mahendra Singh
• Pankaj K. Shrivastava

Solar wind is the supersonic solar plasma expanding in to the space. Solar wind parameter are characterized by solar wind speed, proton density, proton temperature and interplanetary magnetic field (IMF). In the present study, we observe dependence of variation of cosmic rays at different neutron monitor stations on solar wind parameters. The correlation coefficient between solar wind parameters and cosmic rays intensity at ground based neutron monitor stations Oulu, Moscow, Kiel and Beijing are found for complete solar cycle 23 and ascending phase of solar cycle 24 (1996 to 2013). We observe negative correlation of solar wind velocity, proton temperature, proton density and interplanetary magnetic field (IMF) with cosmic rays intensity at all considered neutron monitor stations for the examined period. We found strong correlation coefficient between IMF and cosmic ray intensity, good correlation coefficient between solar wind velocity Vsw and cosmic ray intensity, good correlation coefficient between proton temperature and cosmic ray intensity and weak correlation coefficient between proton density and cosmic ray intensity. We observe above correlation depends on cut off rigidity of neutron monitor station.

Solar wind speed, Proton density, Proton temperature, Interplanetary magnetic field and cosmic ray intensity.

"Study of correlation between solar wind Plasma-field parameters and cosmic rays intensity variation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.143-148, May-2019, Available :http://www.jetir.org/papers/JETIR1905R21.pdf

"Study of correlation between solar wind Plasma-field parameters and cosmic rays intensity variation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp143-148, May-2019, Available at : http://www.jetir.org/papers/JETIR1905R21.pdf