Recently, Niu Jiashu, a lecturer at the Institute of Theoretical Physics of Shanxi University, observed primary universes such as helium nuclei, carbon nuclei, nitrogen nuclei, oxygen nuclei, neon nuclei, magnesium nuclei, and silicon nuclei using AMS-02 (Alpha Magnetic Spectrometer). The analysis of line energy spectrum and secondary cosmic ray energy spectrum such as boron nuclei has statistically significantly discovered for the first time a double-kink structure with a stiffness between about 100 billion volts and one trillion volts, and confirmed these two kink structures. of different sources. This provides important information on the spatial distribution and proportion of each component of the Milky Way cosmic ray source. It is of great significance to further confirm the origin of the Milky Way cosmic rays. It is also another step in the "accurate data-driven era" of cosmic ray physics. Important work.
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The origin of cosmic rays in the Milky Way has always been one of the important issues in contemporary astrophysics . Due to the effect of random magnetic fields in the Milky Way, charged cosmic ray particles will lose their pointing information to the cosmic ray source. Therefore, the analysis of the cosmic ray energy spectrum structure and various components has become the main way to invert the various properties of cosmic ray sources. For the energy spectra of various types of cosmic rays nuclei that have been observed, the most important feature is the inflection of the stiffness between about 100 billion volts and one trillion volts.
Relevant content of this work has recently been published in the top international astronomy journal "Astrophysical Journal" through the paper "Hybrid Origins of the Cosmic-Ray Nucleus Spectral Hardening at a Few Hundred GV". This work was supported by the National Natural Science Foundation of China Youth Project and the Theoretical Physics Platform Project, as well as the Shanxi Provincial Applied Basic Research Program. (Correspondent: Zhang Ying, Shanxi University)
