Intensity of galactic cosmic rays in the early Sun epoch

1Fedorov, YI, 1Shakhov, BA, 1Kolesnyk, YL
1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kinemat. fiz. nebesnyh tel (Online) 2017, 33(1):3-20
Start Page: Extragalactic Astronomy
Language: Russian

The process of the heliospheric modulation of galactic cosmic ray intensity is investigated on the basis of transport equation solution. The spatial-energetic distributions of cosmic rays in the present epoch and in the past are analyzed. It is shown that the particle density and the cosmic ray energy density in the Solar system were considerably reduced in the remote past. The cosmic ray intensity modulation in the early heliosphere appeared especially vigorous for the low energy particles.

Keywords: evolution of the energy spectra, galactic cosmic rays, heliosphere

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