The energy spectra for five elemental groups (p, He, C, Si, Fe) of cosmic rays, are simulated. Calculations are based on an analysis of superposition of few cosmic ray sources (Supernovae of different types) and principles of diffusive shock acceleration. Results of the analysis in the knee region show that summarizing energy spectra for elemental mass groups of cosmic rays can have significant oscillations of spectral index $γ$. Moreover, a kink (increasing $γ$) in Fe spectrum at energy $2\cdot 10^{15}$ eV, is discovered. In order to distinguish from the knee (decreasing $γ$) the kink can be called an anti-knee (increasing $γ$).
Spectral Softenings, Composition Bump, and Anisotropy Transition: A Consistent Picture of Cosmic-Ray Origin Below the Knee
Hebei Normal University(河北师范大学);Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所);University of Wisconsin–Madison(威斯康星大学麦迪逊分校);TIANFU Cosmic Ray Research Center(天府宇宙线研究中心);University of Chinese Academy of Sciences(中国科学院大学)
A Multi-messenger Search for a Nearby Microquasar Contributor to the Cosmic Ray Knee
School of Physical Science and Technology, Southwest Jiaotong University(西南交通大学物理科学与技术学院);State Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所粒子天体物理国家重点实验室);University of Chinese Academy of Sciences(中国科学院大学);TIANFU Cosmic Ray Research Center(天府宇宙线研究中心)
LHAASO Constraints on New-Source Cosmic Rays:Abundance Scenarios and Injection Spectral Indices
Hebei Normal University(河北师范大学);Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所);Tangshan University(唐山学院);Xizang University(西藏大学);Sichuan University(四川大学);University of Chinese Academy of Sciences(中国科学院大学)
Diffusive Propagation of High Energy Cosmic Rays in Galaxy: Effect of Hall Drift
我们唯象地发展了一个高能银河宇宙射线的传播模型。我们采用Berezinskii { \it et al.}提出的半经验扩散方程推导了解析解。(1990)和Ptuskin { \it et al.}(1993年)。该模型同时考虑了由于粒子霍尔漂移引起的对称扩散和反对称扩散。我们的解决方案是Ptuskin { \it et al.}开发的模型的扩展。(1993)转化为二维两层(银盘和晕)模型,并且与Berezinskii { \it et al.}(1990)在没有由于霍尔漂移引起的反对称扩散的情况下。我们发现,这个相对简单的玩具模型可以用来解释宇宙射线能谱的指数$γ$在膝盖$E \approx 10^{15}$ eV附近的变化。
Global Spline Fit: A unified data-driven view of the cosmic-ray spectrum and mass composition from GeV to the highest energies
Institute of Physics, Academia Sinica(中央研究院物理研究所);Fakultät Physik, Technische Universität Dortmund(多特蒙德工业大学物理学院);Karlsruhe Institute of Technology(卡尔斯鲁厄理工学院)