First Detection of γ-Ray Emission from the Compact Symmetric Object JVAS J1311+1658
文献类型：期刊论文
| 作者 | Jiang, Xiong1,2; Li YJ(李阳吉)3,4; Lei, Hai5; Wei, Da-Ming1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-03-10 |
| 卷号 | 999期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae43e0 |
| 产权排序 | 第3完成单位 |
| 文献子类 | Article |
| 英文摘要 | We report the first detection of gamma-ray emission from the young radio galaxy JVAS J1311+1658, classified as a compact symmetric object (CSO). This detection is characterized by a recent GeV gamma-ray flare identified in Fermi-Large Area Telescope data during MJD 60032.6-60132.6, with a gamma-ray source detected at a significance level of similar to 6.2 sigma. The average 0.1-300 GeV flux is measured to be (1.6 +/- 0.6) & times; 10-8 ph cm-2 s-1, with a photon spectral index of Gamma = 2.15 +/- 0.185. We find that a radiative model of the radio lobes significantly underestimates the observed gamma-ray emission. The strong flux and short-term variability over similar to 100 days suggest that the emission likely originates from newly launched subkiloparsec-scale jets at the core. This detection provides a unique window into the extreme environments and early-stage jet activity of young radio galaxies, offering insights into their initial evolution and the formation of relativistic jets in the earliest phases of galaxy growth. |
| 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 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | LARGE-AREA TELESCOPE ; ACTIVE GALACTIC NUCLEI ; HIGH-ENERGY EMISSION ; YOUNG RADIO-SOURCES ; DIGITAL SKY SURVEY ; STEEP-SPECTRUM ; DATA RELEASE ; FERMI-LAT ; GALAXIES ; CATALOG |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)[12473049] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001705461700001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC)[12473049] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29044]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Wei, Da-Ming |
| 作者单位 | 1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People’s Republic of China; dmwei@pmo.ac.cn; 2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 4.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; 5.School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Jiang, Xiong,Li YJ,Lei, Hai,et al. First Detection of γ-Ray Emission from the Compact Symmetric Object JVAS J1311+1658[J]. ASTROPHYSICAL JOURNAL,2026,999(2). |
| APA | Jiang, Xiong,李阳吉,Lei, Hai,&Wei, Da-Ming.(2026).First Detection of γ-Ray Emission from the Compact Symmetric Object JVAS J1311+1658.ASTROPHYSICAL JOURNAL,999(2). |
| MLA | Jiang, Xiong,et al."First Detection of γ-Ray Emission from the Compact Symmetric Object JVAS J1311+1658".ASTROPHYSICAL JOURNAL 999.2(2026). |
入库方式： OAI收割
来源：云南天文台
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