An ultrahigh-energy y-ray bubble powered by a super PeVatron
文献类型：期刊论文
| 作者 | Cao, Z.36,37,38; Aharonian, F.34,35; An, Q.1,33; Axikegu31,32; Bai, Y. X.36,38; Bao, Y. W.30; Bastieri, D.29; Bi, X. J.36,37,38; Bi, Y. J.36,38; Cai, J. T.29 |
| 刊名 | SCIENCE BULLETIN
 |
| 出版日期 | 2024-02-26 |
| 卷号 | 69期号:4页码:449-457 |
| ISSN号 | 2095-9273 |
| 关键词 | Cosmic rays y-rays Interstellar medium Star cluster |
| DOI | 10.1016/j.scib.2023.12.040 |
| 产权排序 | 第29完成单位 |
| 文献子类 | Article |
| 英文摘要 | We report the detection of a y-ray bubble spanning at least 100 deg2 in ultra-high energy (UHE) up to a few PeV in the direction of the star-forming region Cygnus X, implying the presence super PeVatron(s) accelerating protons to at least 10 PeV. A log-parabola form with the photon index C(E) = (2.71 +/- 0.02) + (0.11 +/- 0.02) x log10(E/10 TeV) is found fitting the gamma-ray energy spectrum of the bubble well. UHE sources, hot spots correlated with very massive molecular clouds, and a quasi-spherical amorphous y-ray emitter with a sharp central brightening are observed in the bubble. In the core of - 0.5 degrees, spatially associating with a region containing massive OB association (Cygnus OB2) and a microquasar (Cygnus X-3), as well as previously reported multi-TeV sources, an enhanced concentration of UHE y-rays is observed with 2 photons at energies above 1 PeV. The general feature of the bubble, the morphology, and the energy spectrum, are reasonably reproduced by the assumption of a particle accelerator in the core, continuously injecting protons into the ambient medium. (c) 2023 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved. |
| 学科主题 | 天文学 |
| URL标识 | 查看原文 |
| 出版地 | RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS |
| 资助项目 | Chengdu Management Committee of Tianfu New Area |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001185327600001 |
| 资助机构 | Chengdu Management Committee of Tianfu New Area |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/26550]  |
| 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.State Key Lab Particle Detect & Elect, Beijing, Peoples R China; 2.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China 3.Nanchang Univ, Inst Space Sci & Technol, Nanchang 330031, Peoples R China; 4.Nanchang Univ, Ctr Relativist Astrophys & High Energy Phys, Nanchang 330031, Peoples R China; 5.Mahidol Univ, Dept Phys, Fac Sci, Bangkok 10400, Thailand; 6.Guangxi Univ, Sch Phys Sci & Technol, Nanning 530004, Peoples R China; 7.Peking Univ, Sch Phys, Beijing 100871, Peoples R China; 8.Moscow Inst Phys & Technol, Moscow 141700, Russia; 9.Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia; 10.Sichuan Univ, Coll Phys, Chengdu 610065, Sichuan, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Cao, Z.,Aharonian, F.,An, Q.,et al. An ultrahigh-energy y-ray bubble powered by a super PeVatron[J]. SCIENCE BULLETIN,2024,69(4):449-457. |
| APA | Cao, Z..,Aharonian, F..,An, Q..,Axikegu.,Bai, Y. X..,...&Zuo, X..(2024).An ultrahigh-energy y-ray bubble powered by a super PeVatron.SCIENCE BULLETIN,69(4),449-457. |
| MLA | Cao, Z.,et al."An ultrahigh-energy y-ray bubble powered by a super PeVatron".SCIENCE BULLETIN 69.4(2024):449-457. |
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来源：云南天文台
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