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Determination of source spectra of ultrahigh energy cosmic rays
Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015)
The energy spectra and composition of ultra-high energy cosmic rays are changing in a course of propagation in the expanding Universe filled with background radiation. We use a numerical code for solution of inverse problem for cosmic-ray transport equations that enables the determination of source spectra of different nuclei from the cosmic ray spectra observed at the Earth. The source spectrum is calculated without ad hoc assumptions about its' shape. The spectra of protons and iron nucleidoi:10.22323/1.236.0471 fatcat:gmkbymzkvnguhiwnxbsvckqkyi