The occurrence of a large number high amplitude event (HAE) of cosmic ray diurnal anisotropy during 1981--1994 has been examined as a function of solar activity. The high amplitude days with the time of maximum in the corotational/azimuthal direction do not indicate any significant correlation with solar activity. Our observations suggest that the direction of the anisotropy of HAE events contribute significantly to the long-term behaviour of the diurnal anisotropy. The occurrence of HAE is dominant during sunspot maximum as well as sunspot minimum.
Cosmic ray, solar cycle, sunspot and anisotropy.
MISHRA, RAJESH K. and MISHRA, REKHA AGARWAL (2005) "Cosmic Ray Diurnal Anisotropy Related to Solar Activity," Turkish Journal of Physics: Vol. 29: No. 1, Article 7. Available at: https://journals.tubitak.gov.tr/physics/vol29/iss1/7