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Optimization of performance of the KM2A full array using the Crab Nebula

文献类型：期刊论文

作者Cao, Zhen30,31,32; Aharonian, F.28,29; An, Q.26,27; Axikegu25; Bai, Y.X.30,32; Bao, Y.W.24; Bastieri, D.23; Bi, X.J.30,31,32; Bi, Y.J.30,32; Cai, J.T.23
刊名CHINESE PHYSICS C
出版日期2024-06-01
卷号48期号:6
关键词gamma-ray Crab Nebula significance
ISSN号1674-1137
DOI10.1088/1674-1137/ad2e82
产权排序第24完成单位
文献子类Article
英文摘要The full array of the Large High Altitude Air Shower Observatory (LHAASO) has been in operation since July 2021. For its kilometer-square array (KM2A), we optimized the selection criteria for very high and ultra-high energy gamma-rays using data collected from August 2021 to August 2022, resulting in an improvement in significance of the detection in the Crab Nebula of approximately 15%, compared with that of previous cuts. With the implementation of these new selection criteria, the angular resolution was also significantly improved by approximately 10% at tens of TeV. Other aspects of the full KM2A array performance, such as the pointing error, were also calibrated using the Crab Nebula. The resulting energy spectrum of the Crab Nebula in the energy range of 10-1000 TeV are well fitted by a log-parabola model, which is consistent with the previous results from LHAASO and other experiments.
学科主题物理学 ; 天文学 ; 星系与宇宙学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词TEV ; PULSAR
资助项目National Key R & D Program of China[2018YFA0404201]; National Key R & D Program of China[2018YFA0404202]; National Key R & D Program of China[2018YFA0404203]; National Key R & D Program of China[2018YFA0404204]; National Natural Science Foundation of China[12022502]; National Natural Science Foundation of China[12205314]; National Natural Science Foundation of China[12105301]; National Natural Science Foundation of China[12261160362]; National Natural Science Foundation of China[12105294]; National Natural Science Foundation of China[U1931201]; Youth Innovation Promotion Association CAS[2022010]; Thailand by the National Science and Technology Development Agency (NSTDA); National Research Council of Thailand (NRCT): High-Potential Research Team Grant Program[N42A650868]
WOS研究方向Physics
语种英语
WOS记录号WOS:001223230400001
出版者IOP Publishing Ltd
资助机构National Key R & D Program of China[2018YFA0404201, 2018YFA0404202, 2018YFA0404203, 2018YFA0404204] ; National Natural Science Foundation of China[12022502, 12205314, 12105301, 12261160362, 12105294, U1931201] ; Youth Innovation Promotion Association CAS[2022010] ; Thailand by the National Science and Technology Development Agency (NSTDA) ; National Research Council of Thailand (NRCT): High-Potential Research Team Grant Program[N42A650868]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27348]  
专题星系类星体研究组
云南天文台_高能天体物理研究组
作者单位1.National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China
2.Center for Relativistic Astrophysics and High Energy Physics, School of Physics and Materials Science & Institute of Space Science and Technology, Nanchang University, Nanchang 330031, China;
3.Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
4.School of Physical Science and Technology, Guangxi University, Nanning 530004, China;
5.School of Physics, Peking University, Beijing 100871, China;
6.Moscow Institute of Physics and Technology, Moscow 141700, Russia;
7.Institute for Nuclear Research of Russian Academy of Sciences, Moscow 117312, Russia;
8.College of Physics, Sichuan University, Chengdu 610065, China;
9.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
10.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China;
推荐引用方式
GB/T 7714		 Cao, Zhen,Aharonian, F.,An, Q.,et al. Optimization of performance of the KM2A full array using the Crab Nebula[J]. CHINESE PHYSICS C,2024,48(6).
APA Cao, Zhen.,Aharonian, F..,An, Q..,Axikegu.,Bai, Y.X..,...&Zuo, X..(2024).Optimization of performance of the KM2A full array using the Crab Nebula.CHINESE PHYSICS C,48(6).
MLA Cao, Zhen,et al."Optimization of performance of the KM2A full array using the Crab Nebula".CHINESE PHYSICS C 48.6(2024).

入库方式： OAI收割

来源：云南天文台

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