Detection of Very High-energy Gamma-Ray Emission from the Radio Galaxy M87 with LHAASO
文献类型：期刊论文
| 作者 | Cao, Zhen33,34,35; Aharonian, F.31,32; Axikegu30; Bai, Y. X.33,35; Bao, Y. W.29; Bastieri, D.28; Bi, X. J.33,34,35; Bi, Y. J.33,35; Bian, W.27; Bukevich, A. V.26 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 975期号:2 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ad8921 |
| 产权排序 | 第26完成单位 |
| 文献子类 | Article |
| 英文摘要 | The nearby radio galaxy M87 is a very high-energy (VHE) gamma-ray emitter established by observations with ground-based gamma-ray detectors. Here we report the long-term monitoring of M87 from 2021 to 2024 with the Large High Altitude Air Shower Observatory (LHAASO). M87 has been detected by LHAASO with a statistical significance similar to 9 sigma. The observed energy spectrum extends to 20 TeV, with a possible hardening at similar to 20 TeV and then a clear softening at higher energies. Assuming that the intrinsic spectrum is described by a single power law up to 20 TeV, a tight upper bound on the extragalactic background light intensity is obtained. A strong VHE flare lasting 8 days, with a rise time of tau(rise)(r) = 1.05 +/- 0.49 days and decay time of tau(decay)(d) = 2.17 +/- 0.58 days, was found in early 2022. A possible GeV flare is seen also in Fermi Large Area Telescope data during the VHE flare period. The variability time as short as 1 day seen in the LHAASO data suggests a compact emission region with a size of similar to 3 x 10(15) delta cm (delta being the Doppler factor of the emitting region), corresponding to a few Schwarzschild radii of the central supermassive black hole in M87. The continuous monitoring of the source reveals a duty cycle of similar to 1% for VHE flares with a flux above 10(-11) erg cm(-2) s(-1). |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 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 | FAST TEV VARIABILITY ; BLACK-HOLE ; JET ; NUCLEI ; RECONNECTION ; RADIATION ; FLARES ; HST-1 ; CORE ; M-87 |
| 资助项目 | Chengdu Management Committee of Tianfu New Area; NSFC[12333006]; NSFC[12203022]; NSFC[12133003]; NSFC[12203013]; NSFC[12121003]; National Science and Technology Development Agency (NSTDA); National Research Council of Thailand (NRCT) under the High-Potential Research Team Grant Program[N42A650868]; Guangxi Talent Program (Highland of Innovation Talents) |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001374309900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Chengdu Management Committee of Tianfu New Area ; NSFC[12333006, 12203022, 12133003, 12203013, 12121003] ; National Science and Technology Development Agency (NSTDA) ; National Research Council of Thailand (NRCT) under the High-Potential Research Team Grant Program[N42A650868] ; Guangxi Talent Program (Highland of Innovation Talents) |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27941]  |
| 专题 | 星系类星体研究组 云南天文台_丽江天文观测站（南方基地） 云南天文台_高能天体物理研究组 |
| 作者单位 | 1.Key Laboratory of Cosmic Rays (Tibet University), Ministry of Education, 850000 Lhasa, Tibet, People's Republic of China; 2.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, Hubei, People's Republic of China 3.National Space Science Center, Chinese Academy of Sciences, 100190 Beijing, People's Republic of China; 4.Center for Relativistic Astrophysics and High Energy Physics, School of Physics and Materials Science and Institute of Space Science and Technology, Nanchang University, 330031 Nanchang, Jiangxi, People's Republic of China; 5.Moscow Institute of Physics and Technology, 141700 Moscow, Russia; 6.Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; 7.Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, 530004 Nanning, Guangxi, People's Republic of China; hmzhang@gxu.edu.cn; 8.School of Physics, Peking University, 100871 Beijing, People's Republic of China; 9.College of Physics, Sichuan University, 610065 Chengdu, Sichuan, People's Republic of China; 10.China Center of Advanced Science and Technology, Beijing 100190, People's Republic of China; |
| 推荐引用方式 GB/T 7714 | Cao, Zhen,Aharonian, F.,Axikegu,et al. Detection of Very High-energy Gamma-Ray Emission from the Radio Galaxy M87 with LHAASO[J]. ASTROPHYSICAL JOURNAL LETTERS,2024,975(2). |
| APA | Cao, Zhen.,Aharonian, F..,Axikegu.,Bai, Y. X..,Bao, Y. W..,...&Zuo, X..(2024).Detection of Very High-energy Gamma-Ray Emission from the Radio Galaxy M87 with LHAASO.ASTROPHYSICAL JOURNAL LETTERS,975(2). |
| MLA | Cao, Zhen,et al."Detection of Very High-energy Gamma-Ray Emission from the Radio Galaxy M87 with LHAASO".ASTROPHYSICAL JOURNAL LETTERS 975.2(2024). |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
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。