Cosmogenic Radionuclides in Chelyabinsk and Kosice Chondrites and Features of Solar Cycles 23 and 24

摘要

Based on the example of the measured and calculated contents of cosmogenic radionuclides in freshly fallen Chelyabinsk and Kosice chondrites, an indirect approach to studying variations in galactic cosmic rays is presented that uses variations in the rates of production of radionuclides with different half-lives in the meteorites that continuously fall to Earth from orbits of different sizes and inclinations. The advantages of monitoring these data over a long time scale to establish the main regularities of solar modulation processes in the heliosphere are demonstrated. The possible effect of stochastic factors in the operation of the solar dynamo had on the peculiarities of GCR modulation in solar cycles 23 and 24 is discussed.