IHEP OpenIR  > 粒子天体物理中心
Knee of the cosmic hydrogen and helium spectrum below 1 PeV measured by ARGO-YBJ and a Cherenkov telescope of LHAASO
ARGO-YBJ Collaboration; LHAASO Collaboration
2015
发表期刊PHYSICAL REVIEW D
卷号92期号:9页码:92005
文章类型Article
摘要The measurement of the cosmic ray energy spectrum, in particular for individual species of nuclei, is an important tool to investigate cosmic ray production and propagation mechanisms. The determination of the "knees" in the spectra of different species remains one of the main challenges in cosmic ray physics. In fact, experimental results are still conflicting. In this paper we report a measurement of the mixed proton and helium energy spectrum, obtained with the combined data of the ARGO-YBJ experiment and a wide field of view Cherenkov telescope, a prototype of the future LHAASO experiment. By means of a multiparameter technique, we have selected a high-purity proton plus helium sample. The reconstructed energy resolution is found to be about 25% throughout the investigated energy range from 100 TeV to 3 PeV, with a systematic uncertainty in the absolute energy scale of 9.7%. The found energy spectrum can be fitted with a broken power-law function, with a break at the energy E-k = 700 +/- 230(stat) +/- 70(sys) TeV, where the spectral index changes from -2.56 +/- 0.05 to -3.24 +/- 0.36. The statistical significance of the observed spectral break is 4.2 standard deviations.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.92.092005
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000364215800001
引用统计
被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228823
专题粒子天体物理中心
推荐引用方式
GB/T 7714
ARGO-YBJ Collaboration,LHAASO Collaboration. Knee of the cosmic hydrogen and helium spectrum below 1 PeV measured by ARGO-YBJ and a Cherenkov telescope of LHAASO[J]. PHYSICAL REVIEW D,2015,92(9):92005.
APA ARGO-YBJ Collaboration,&LHAASO Collaboration.(2015).Knee of the cosmic hydrogen and helium spectrum below 1 PeV measured by ARGO-YBJ and a Cherenkov telescope of LHAASO.PHYSICAL REVIEW D,92(9),92005.
MLA ARGO-YBJ Collaboration,et al."Knee of the cosmic hydrogen and helium spectrum below 1 PeV measured by ARGO-YBJ and a Cherenkov telescope of LHAASO".PHYSICAL REVIEW D 92.9(2015):92005.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
772.pdf(1338KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[ARGO-YBJ Collaboration]的文章
[LHAASO Collaboration]的文章
百度学术
百度学术中相似的文章
[ARGO-YBJ Collaboration]的文章
[LHAASO Collaboration]的文章
必应学术
必应学术中相似的文章
[ARGO-YBJ Collaboration]的文章
[LHAASO Collaboration]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。