• Arvind dubey
• Santosh kumar
• Sushil kumar dubey

The diurnal anisotropy of cosmic ray intensity for the time period 1986 to 2017 is studied, covering the amplitude and phase of solar cycle 22,23 and 24 for entire period . Cosmic ray intensity data from 3 neutron monitor station ( Inuvik, Kiel and Moscow) is used. The data is analyses by harmonic analyses and Fourier technique for entire period. It has been observed that the diurnal amplitude increases in maximum solar activities and decreasing minimum solar activates of these station . The phase of diurnal anisotropy is well correlated with solar cycle and the phase shifted to early hours.

Cosmic ray, solar activity ,solar cycle and diurnal anisotropy

"Daily Variation of cosmic ray Intensity in Solar Cycle 22,23 and 24", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.481-484, July-2018, Available :http://www.jetir.org/papers/JETIR1807223.pdf

"Daily Variation of cosmic ray Intensity in Solar Cycle 22,23 and 24", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp481-484, July-2018, Available at : http://www.jetir.org/papers/JETIR1807223.pdf