基于暗物质粒子探测卫星的宇宙线直接探测研究  

Direct Detection of Cosmic Rays with the Dark Matter Particle Explorer

作　　者：袁强 YUAN Qiang(Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023;School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026)

机构地区：[1]中国科学院紫金山天文台暗物质与空间天文重点实验室,南京210023 [2]中国科学技术大学天文与空间科学学院,合肥230026

出　　处：《天文学报》2023年第5期1-9,共9页Acta Astronomica Sinica

基　　金：国家自然科学基金项目(12220101003);中国科学院稳定支持基础研究领域青年团队计划(YSBR-061)资助。

摘　　要：高能宇宙线的起源、加速和传播是重大的前沿科学问题,回答该问题需要对宇宙线的能谱、各向异性以及各类高能天体电磁辐射进行精确观测.通过空间粒子探测器对宇宙线各成分能谱的直接测量是研究宇宙线物理问题的重要手段.中国于2015年底发射并持续运行至今的暗物质粒子探测卫星以其大接受度、高能量分辨率等特点,在宇宙线直接探测方面取得了系列重要成果,揭示出质子、氦核、硼碳和硼氧比例等宇宙线能谱的新结构,为理解宇宙线起源等科学问题提供了新的依据.介绍了暗物质粒子探测卫星的仪器设置、运行状况、科学成果及其物理意义.The origin,acceleration,and propagation of high-energy cosmic rays is one of the most important questions in modern physics and astronomy.To fully uncover such a mystery,precise measurements of the energy spectra and anisotropies of cosmic rays,as well as multi-wavelength electromagnetic radiation from various types of energetic objects are required.The direct measurements of energy spectra of different species via particle detectors in space are an essential way to study cosmic ray physics.China launched the first space astronomical satellite,the Dark Matter Particle Explorer(DAMPE)in the end of 2015,which keeps operation in space for more than 7 years.The DAMPE has a relatively large acceptance and a high energy resolution,and has made important progresses in measuring the spectral structures of cosmic ray protons,helium nuclei,and boron-to-carbon and boron-to-oxygen ratios.These new measurements bring new insights in understanding the origin and propagation of cosmic rays.This paper reviews the instrumentation and operation of DAMPE,with an emphasis on its scientific results and physical implications in cosmic ray studies.

关 键 词：空间天文 宇宙线 辐射机制:非热 粒子天体物理 

分 类 号：P144[天文地球—天体物理]