Potential for Constraining Propagation Parameters of Galactic Cosmic Rays with the High Energy Cosmic-radiation Detection Facility on Board China's Space Station  

作　　者：Zhi-Hui Xu Qiang Yuan Zhi-Cheng Tang Xiao-Jun Bi 

机构地区：[1]Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China [2]School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China [3]Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [4]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Research in Astronomy and Astrophysics》2023年第8期290-296,共7页天文和天体物理学研究（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2021YFA0718404);the National Natural Science Foundation of China(No.12220101003);the Project for Young Scientists in Basic Research of Chinese Academy of Sciences(No.YSBR-061)。

摘　　要：Precise measurements of the spectra of secondary and primary cosmic rays are crucial for understanding the origin and propagation of those energetic particles.The High Energy Cosmic-radiation Detection(HERD)facility on board China's Space Station,which is expected to operate in 2027,will push the direct and precise measurements of cosmic-ray fluxes up to PeV energies.In this work,we investigate the potential of HERD for studying the propagation of cosmic rays using measurements of boron,carbon,and oxygen spectra.We find that,compared with the current results,the new HERD measurements can improve the accuracy of the propagation parameters by 8%–40%.The constraints on the injection spectra at high energies will also be improved.

关 键 词：(ISM:)cosmic rays-instrumentation detectors-The Galaxy 

分 类 号：P172.4[天文地球—天文学]