项目名称: 暗物质卫星观测宇宙线电子通量
项目编号: No.U1531126
项目类型: 联合基金项目
立项/批准年度: 2016
项目学科: 天文学、地球科学
项目作者: 刘杨
作者单位: 中国科学院紫金山天文台
项目金额: 46万元
中文摘要: 空间间接探测暗物质是探测暗物质的重要方式,也是国际天体物理界的研究热点,最近十年取得了很大进展。中国暗物质粒子探测卫星在探测高能宇宙线电子方面,与国际同类探测器相比,有探测能量范围大,能量分辨率高,粒子接收度高等优点。中国暗物质粒子探测卫星将于2015年底发射,2016年可望取得科学数据。我们将对暗物质粒子卫星获取的原始数据进行精密的数据分析。我们将研究探测器特性,获得仪器响应函数;对质子-电子鉴别进行详尽研究;利用飞行数据做探测器标定;对本底进行研究并发展扣除方法。最终研究目标是得到从5GeV到10TeV宇宙线高能电子通量谱。这一研究将有助于了解空间宇宙线高能电子性质,并对暗物质的研究提供有价值的信息。
中文关键词: 宇宙线;电子通量;;暗物质;数据分析
英文摘要: Indirect detection of dark matter plays an important role in dark matter study. It is one of the most attractive field in Astrophysics and in recent 10 years many exciting progresses have been achieved. The DArk Matter Particle Explorer (DAMPE) project of Chinese Academy of Science (CAS) is to launch a satellite for dark matter detection. Comparing to the similar detectors, The DAMPE has the advantages of covering energy region to 10TeV, good energy resolution and high particle acceptance. The DAMPE will be launched by the end of 2015 and the scientific data will be available in 2016. We will apply a precise data analysis on the raw data collected by the DAMPE. We will calculate the Instrument Response Function; develop the method of discriminating protons from electrons; calibrate the detector continuously using flying data; study the source of background and the ways to remove it. Our object is to measure the cosmic-ray electron flux from 5GeV to 10 TeV. This study will be helpful for understanding the cosmic-ray electrons and also will give valuable clues for dark matter.
英文关键词: Cosmic-ray;Electron Flux;Dark Matter;Data Analysis