作者: M. Mergè , S. Y. Krutkov , G. C. Barbarino , S. Koldobskiy , R. Munini
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摘要: Precise measurements of the time-dependent intensity low energy ($<50$ GeV) galactic cosmic rays are fundamental to test and improve models which describe their propagation inside heliosphere. Especially, data spanning different solar activity periods, i.e. from minimum maximum, needed achieve comprehensive understanding such physical phenomenon. The phase between 23$^{rd}$ 24$^{th}$ cycles was peculiarly long, extending up beginning 2010 followed by maximum phase, reached during early 2014. In this paper, we present proton differential spectra measured January February 2014 PAMELA experiment. For first time ray studied over a wide range (0.08-50 single apparatus period activity. large statistics allowed variation be investigated on nearly monthly basis. Data were compared interpreted in context state-of-the-art three-dimensional model describing through