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Constraints on Ultraheavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations

文献类型：期刊论文

作者Cao, Zhen31,32,33; Aharonian, F.29,30; An, Q.27,28; Axikegu26; Bai, Y. X.31,33; Bao, Y. W.25; Bastieri, D.24; Bi, X. J.31,32,33; Bi, Y. J.31,33; Cai, J. T.24
刊名Physical Review Letters
出版日期2024-08-09
卷号133期号:6
ISSN号0031-9007
DOI10.1103/PhysRevLett.133.061001
产权排序第24完成单位
文献子类Journal article (JA)
英文摘要In this Letter we try to search for signals generated by ultraheavy dark matter at the Large High Altitude Air Shower Observatory (LHAASO) data. We look for possible γ rays by dark matter annihilation or decay from 16 dwarf spheroidal galaxies in the field of view of the LHAASO. Dwarf spheroidal galaxies are among the most promising targets for indirect detection of dark matter that have low fluxes of astrophysical γ-ray background while having large amount of dark matter. By analyzing more than 700 days of observational data at LHAASO, no significant dark matter signal from 1 TeV to 1 EeV is detected. Accordingly we derive the most stringent constraints on the ultraheavy dark matter annihilation cross section up to EeV. The constraints on the lifetime of dark matter in decay mode are also derived. © 2024 American Physical Society.
学科主题天文学 ; 星系与银河系
URL标识查看原文
资助项目National Research Council of Thailand[N42A650868]
语种英语
资助机构National Research Council of Thailand[N42A650868]
源URL[http://ir.ynao.ac.cn/handle/114a53/27546]  
专题星系类星体研究组
作者单位1.School of Physics and Astronomy (Zhuhai), School of Physics (Guangzhou), Sino-French Institute of Nuclear Engineering and Technology (Zhuhai), Sun Yat-sen University, Guangdong, Guangzhou, 510275, China
2.National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China;
3.Center for Relativistic Astrophysics and High Energy Physics, School of Physics and Materials Science, Institute of Space Science and Technology, Nanchang University, Jiangxi, Nanchang, 330031, China;
4.Department of Physics, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand;
5.School of Physical Science and Technology, Guangxi University, Guangxi, Nanning, 530004, China;
6.School of Physics, Peking University, Beijing, 100871, China;
7.Moscow Institute of Physics and Technology, Moscow, 141700, Russia;
8.Institute for Nuclear Research, Russian Academy of Sciences, Moscow, 117312, Russia;
9.College of Physics, Sichuan University, Sichuan, Chengdu, 610065, China;
10.Yunnan Observatories, Chinese Academy of Sciences, Yunnan, Kunming, 650216, China;
推荐引用方式
GB/T 7714		 Cao, Zhen,Aharonian, F.,An, Q.,et al. Constraints on Ultraheavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations[J]. Physical Review Letters,2024,133(6).
APA Cao, Zhen.,Aharonian, F..,An, Q..,Axikegu.,Bai, Y. X..,...&王建成.(2024).Constraints on Ultraheavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations.Physical Review Letters,133(6).
MLA Cao, Zhen,et al."Constraints on Ultraheavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations".Physical Review Letters 133.6(2024).

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来源：云南天文台

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