Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources | |
Cao, Zhen13,14,18; Aharonian, F. A.15,16; An, Q.12,17; Axikegu23; Bai, L. X.22; Bai, Y. X.13,18; Bao, Y. W.21; Bastieri, D.20; Bi, X. J.13,14,18; Bi, Y. J.13,18 | |
刊名 | Nature |
2021-06-03 | |
卷号 | 594期号:7861页码:33-36 |
ISSN号 | 0028-0836 |
DOI | 10.1038/s41586-021-03498-z |
产权排序 | 第25完成单位 |
文献子类 | Article |
英文摘要 | The extension of the cosmic-ray spectrum beyond 1 petaelectronvolt (PeV; 1015 electronvolts) indicates the existence of the so-called PeVatrons—cosmic-ray factories that accelerate particles to PeV energies. We need to locate and identify such objects to find the origin of Galactic cosmic rays1. The principal signature of both electron and proton PeVatrons is ultrahigh-energy (exceeding 100 TeV) γ radiation. Evidence of the presence of a proton PeVatron has been found in the Galactic Centre, according to the detection of a hard-spectrum radiation extending to 0.04 PeV (ref. 2). Although γ-rays with energies slightly higher than 0.1 PeV have been reported from a few objects in the Galactic plane3–6, unbiased identification and in-depth exploration of PeVatrons requires detection of γ-rays with energies well above 0.1 PeV. Here we report the detection of more than 530 photons at energies above 100 teraelectronvolts and up to 1.4 PeV from 12 ultrahigh-energy γ-ray sources with a statistical significance greater than seven standard deviations. Despite having several potential counterparts in their proximity, including pulsar wind nebulae, supernova remnants and star-forming regions, the PeVatrons responsible for the ultrahigh-energy γ-rays have not yet been firmly localized and identified (except for the Crab Nebula), leaving open the origin of these extreme accelerators. © 2021, The Author(s), under exclusive licence to Springer Nature Limited. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 |
URL标识 | 查看原文 |
出版地 | HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY |
资助项目 | National Key R&D programme of China[2018YFA0404201] ; National Key R&D programme of China[2018YFA0404202] ; National Key R&D programme of China[2018YFA0404203] ; National Key R&D programme of China[2018YFA0404204] ; NSFC[12022502] ; NSFC[11905227] ; NSFC[U1931112] ; NSFC[11635011] ; NSFC[11761141001] ; NSFC[U2031105] ; Thailand Science Research and Innovation[RTA6280002] ; Chengdu Management Committee of Tianfu New Area |
WOS关键词 | STAR-FORMING COMPLEX ; PULSAR-WIND ; GAMMA-RAYS ; MILKY-WAY ; MOLECULAR CLOUDS ; SUPERNOVA ; RADIATION ; TEV ; REMNANT ; NEBULA |
WOS研究方向 | Science & Technology - Other Topics |
语种 | 英语 |
出版者 | NATURE RESEARCH |
WOS记录号 | WOS:000651348600001 |
资助机构 | National Key R&D programme of China[2018YFA0404201, 2018YFA0404202, 2018YFA0404203, 2018YFA0404204] ; NSFC[12022502, 11905227, U1931112, 11635011, 11761141001, U2031105] ; Thailand Science Research and Innovation[RTA6280002] ; Chengdu Management Committee of Tianfu New Area |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24430] |
专题 | 云南天文台_丽江天文观测站(南方基地) |
通讯作者 | Cao, Zhen; Aharonian, F. A.; Chen, S. Z.; Liu, R. Y.; Yang, R. Z. |
作者单位 | 1.Département de Physique Nucléaire et Corpusculaire, Faculté de Sciences, Université de Genève, Geneva, Switzerland; 2.Dipartimento di Fisica dell’Università di Napoli 3.Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, China; 4.Department of Engineering Physics, Tsinghua University, Beijing, China; 5.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, China; 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China; 7.Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russia; 8.School of Physics, Peking University, Beijing, China; 9.School of Physical Science and Technology, Guangxi University, Nanning, China; 10.Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China; |
推荐引用方式 GB/T 7714 | Cao, Zhen,Aharonian, F. A.,An, Q.,et al. Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources[J]. Nature,2021,594(7861):33-36. |
APA | Cao, Zhen.,Aharonian, F. A..,An, Q..,Axikegu.,Bai, L. X..,...&Zuo, X..(2021).Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources.Nature,594(7861),33-36. |
MLA | Cao, Zhen,et al."Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources".Nature 594.7861(2021):33-36. |
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