1. IE browser is NOT supported anymore. Please use Chrome, Firefox or Edge instead.
2. If you are a new user, please register to get an IHEP SSO account through https://login.ihep.ac.cn/registlight.jsp Any questions, please email us at helpdesk@ihep.ac.cn or call 88236855.
3. If you need to create a conference in the "Conferences, Workshops and Events" zone, please email us at helpdesk@ihep.ac.cn.
4. The max file size allowed for upload is 100 Mb.

宇宙线电子的起源

17 Aug 2021, 08:30
15m
Oral report 4. 中微子物理、粒子天体物理与宇宙学 Parallel Session IV:Neutrino, Astroparticle Physics and Cosmology

Speaker

伟伟 许 (Shandong University)

Description

阿尔法磁谱仪(AMS)实验基于在国际空间站所收集的2800万个电子事例,测量了在0.5GeV-1.4 TeV能量范围内宇宙线电子流强。实验结果显示,电子和正电子流强无论在强度还是在能量依赖关系上都有明显的区别。电子流强在41.2 GeV出开始明显超出其在低能区间的变化趋势,但是该超出与正电子起始于25.2 GeV处的超出有着本质的区别。正电子在810 GeV处存在指数型截止能量,而电子能谱以超过5倍显著性排除了能量低于1.9 TeV的截止能量。AMS电子能谱在整个能量区间可以描述为两个幂律谱的叠加。AMS结果表明高能电子和正电子存在不同的起源。

Primary author

伟伟 许 (Shandong University)

Presentation materials