Time lag between cosmic rays and solar activity: solar minimum of 1994–1996 and residual modulation Original Research Article

Using neutron monitor (NM) data of stations with different cut-off rigidities, we calculate the rigidity dependence of the galactic cosmic ray long-term variation near the last solar minimum (sunspot number W ≤ 40, January 1994–January 1997). In the framework of a model for the global cosmic ray modulation in the heliosphere, taking into account the time-lag of processes in interplanetary space relative to processes on the Sun using data on solar activity-cosmic ray hysteresis effects, we estimate the radial dimension of the modulation region, the radial diffusion coefficient, the cosmic ray intensity outside of the heliosphere, and the residual cosmic ray modulation depending on primary cosmic ray particle rigidity.