LHAASO detection of very-high-energy γ-ray emission surrounding PSR J0248+6021
文献类型：期刊论文
| 作者 | Cao, Zhen1,11,12; Aharonian, F.9,10; Axikegu8; Bai, Y. X.1,11; Bao, Y. W.7; Bastieri, D.6; Bi, X. J.1,11,12; Bi, Y. J.1,11; Bian, W.36; Bukevich, A. V.32 |
| 刊名 | Science China: Physics, Mechanics and Astronomy
 |
| 出版日期 | 2025-07 |
| 卷号 | 68期号:7 |
| 关键词 | γ rays pulsars individual PSR J0248+6021 interstellar medium (ISM) nebulae |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-024-2508-5 |
| 产权排序 | 第27完成单位 |
| 文献子类 | Journal article (JA) |
| 英文摘要 | We report the detection of an extended very-high-energy (VHE) γ-ray source coincident with the location of middle-aged (62.4 kyr) pulsar PSR J0248+6021, by using the LHAASO-WCDA data of live 796 d and LHAASO-KM2A data of live 1216 d. A significant excess of γ-ray induced showers is observed both by WCDA in energy bands of 1–25 TeV and KM2A in energy bands of >25 TeV with 7.3σ and 13.5σ, respectively. The best-fit position derived through WCDA data is R.A. = 42.06° ± 0.12° and Dec. = 60.24° ± 0.13° with an extension of 0.69°±0.15° and that of the KM2A data is R.A.= 42.29° ± 0.13° and Dec. = 60.38° ± 0.07° with an extension of 0.37° ±0.07°. No clear extended multiwavelength counterpart of this LHAASO source has been found from the radio band to the GeV band. The most plausible explanation of the VHE γ-ray emission is the inverse Compton process of highly relativistic electrons and positrons injected by the pulsar. These electrons/positrons are hypothesized to be either confined within the pulsar wind nebula or to have already escaped into the interstellar medium, forming a pulsar halo. © Science China Press 2025. |
| 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 |
| 资助项目 | N/A |
| 语种 | 英语 |
| 资助机构 | N/A |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28169]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.Key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; 2.Key Laboratory of Radio Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China; 3.School of Physics and Astronomy (Zhuhai) & Sino-French Institute of Nuclear Engineering and Technology (Zhuhai), Sun Yat-sen University, Zhuhai, 519000, China; 4.School of Physics (Guangzhou), Sun Yat-sen University, Guangzhou, 510275, China; 5.Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, 266237, China; 6.Center for Astrophysics, Guangzhou University, Guangzhou, 510006, China; 7.School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China; 8.School of Physical Science and Technology & School of Information Science and Technology, Southwest Jiaotong University, Chengdu, 610031, China; 9.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, Heidelberg, 69029, Germany; 10.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2, Dublin, Ireland; |
| 推荐引用方式 GB/T 7714 | Cao, Zhen,Aharonian, F.,Axikegu,et al. LHAASO detection of very-high-energy γ-ray emission surrounding PSR J0248+6021[J]. Science China: Physics, Mechanics and Astronomy,2025,68(7). |
| APA | Cao, Zhen.,Aharonian, F..,Axikegu.,Bai, Y. X..,Bao, Y. W..,...&Luo, Q..(2025).LHAASO detection of very-high-energy γ-ray emission surrounding PSR J0248+6021.Science China: Physics, Mechanics and Astronomy,68(7). |
| MLA | Cao, Zhen,et al."LHAASO detection of very-high-energy γ-ray emission surrounding PSR J0248+6021".Science China: Physics, Mechanics and Astronomy 68.7(2025). |
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来源：云南天文台
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