Kolesnyk Y. Dynamics of space-time and energy distribution of cosmic rays in a heliosphere

The thesis is devoted to the investigation of dynamics of space-time and energy distribution of cosmic rays (CR) in a space. Problems solutions of stationary CR modulation for constant diffusion coefficient as well as for coefficient that depends on the distance to the Sun have been obtained on the basis of analytical methods of theoretical physics. For the first time it has been analytically shown that on heliosphere border appears more particles of high energy CR than in the interstellar medium, whereas the particles of small energy are less. These results correspond to the results obtained experimentally on the space craft's "Voyager". The obtained signs of flows indicate that the low energy particles "are involved" into a heliosphere, and high energy particles - "are pushed out" from it for stationary distribution. The iteration analytical method of the problems solutions of CR distribution in a space has been considered. On its basis the analytical solutions of problems for stationary modulation of CR as well as for non-stationary modulation of CR have been obtained. Efficiency and expediency of their application has been analysed. It has been shown that СR concentration, which is obtained as the solution of a non-stationary problem of CR modulation is in agreement with phases of solar activity and describes the dynamics its setting depending on the heliocentric distance.