Is Fermi 1544-0649 a Misaligned Blazar? Discovering the Jet Structure with Very Long Baseline Interferometry
文献类型：期刊论文
| 作者 | Shao, Chengyu8; Cheng, Xiaopeng7; Thomas, Tam, Pak-Hin8; Yang, Lili8; Cui, Yudong8; Pal, Partha Sarathi6; Zhang, Zhongli5; Sohn, Bong Won4,7; Sugiyama, Koichiro3; Chen W(陈文)1,2
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2022-07-01 |
| 卷号 | 934期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac778c |
| 产权排序 | 第7完成单位 |
| 文献子类 | Article |
| 英文摘要 | Fermi J1544-0649 is a transient GeV source first detected during its GeV flares in 2017. Multiwavelength observations during the flaring time demonstrate variability and spectral energy distributions that are typical of a blazar. Other than the flare time, Fermi J1544-0649 is quiet in the GeV band and has looked rather like a quiet galaxy (2MASX J15441967-0649156) for a decade. Together with the broad absorption-lines-like feature we further explore the misaligned blazar scenario. We analyzed the Very Long Baseline Array (VLBA) and East Asian VLBI Network (EAVN) data from 2018 to 2020 and discovered the four jet components from Fermi J1544-0649. We found a viewing angle around 3.degrees 7 to 7.degrees 4. The lower limit of the viewing angle indicates a blazar with an extreme low duty cycle of gamma-ray emission; the upper limit of it supports the misaligned blazar scenario. Follow-up multiwavelength observations after 2018 show Fermi J1544-0649 remains quiet in GeV, X-ray, and optical bands. A multimessenger search of neutrinos is also performed, and an excess of 3.1 sigma significance is found for this source. |
| 学科主题 | 天文学 ; 射电天文学 ; 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 | ACTIVE GALACTIC NUCLEI ; GHZ METHANOL MASERS ; DOPPLER FACTORS ; QUASARS ; SCIENCE ; ORIGIN ; ANGLES ; MOJAVE |
| 资助项目 | National Natural Science Foundation of China (NSFC)[11633007] ; National Natural Science Foundation of China (NSFC)[12005313] ; National Natural Science Foundation of China (NSFC)[U1731136] ; Guangdong Major Project of Basic and Applied Basic Research[2019B030302001] ; Key Laboratory of TianQin Project (Sun Yat-sen University), Ministry of Education ; China Manned Space Project[CMS-CSST-2021B09] ; Brain Pool Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT[2019H1D3 A1A01102564] ; NSFC[11973099] ; National SKA Program of China[2020SKA0120200] ; Shanghai Astronomical Observatory through an MoU with the NRAO[BT146] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000828876200001 |
| 资助机构 | National Natural Science Foundation of China (NSFC)[11633007, 12005313, U1731136] ; Guangdong Major Project of Basic and Applied Basic Research[2019B030302001] ; Key Laboratory of TianQin Project (Sun Yat-sen University), Ministry of Education ; China Manned Space Project[CMS-CSST-2021B09] ; Brain Pool Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT[2019H1D3 A1A01102564] ; NSFC[11973099] ; National SKA Program of China[2020SKA0120200] ; Shanghai Astronomical Observatory through an MoU with the NRAO[BT146] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/25512]  |
| 专题 | 云南天文台_射电天文研究组 |
| 通讯作者 | Cheng, Xiaopeng |
| 作者单位 | 1.University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, People's Republic of China 2.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, Yunnan, People's Republic of China; 3.National Astronomical Research Institute of Thailand (Public Organization), 260 Moo 4, T. Donkaew, A. Maerim, Chiang Mai, 50180, Thailand; 4.Department of Astronomy and Space Science, University of Science and Technology, 217 Gajeong-ro, Daejeon, Republic of Korea; 5.Shanghai Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Shanghai 200030, People's Republic of China; 6.Laboratory for Space Research, The University of Hong Kong, Hong Kong; 7.Korea Astronomy and Space Science Institute, 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of Korea; xcheng0808@gmail.com; 8.School of Physics and Astronomy, Sun Yat-sen University, Guangzhou 510275, People's Republic Of China; tanbxuan@mail.sysu.edu.cn, yanglli5@mail.sysu.edu.cn, cuiyd@mail.sysu.edu.cn; |
| 推荐引用方式 GB/T 7714 | Shao, Chengyu,Cheng, Xiaopeng,Thomas, Tam, Pak-Hin,et al. Is Fermi 1544-0649 a Misaligned Blazar? Discovering the Jet Structure with Very Long Baseline Interferometry[J]. ASTROPHYSICAL JOURNAL,2022,934(1). |
| APA | Shao, Chengyu.,Cheng, Xiaopeng.,Thomas, Tam, Pak-Hin.,Yang, Lili.,Cui, Yudong.,...&Hao LF.(2022).Is Fermi 1544-0649 a Misaligned Blazar? Discovering the Jet Structure with Very Long Baseline Interferometry.ASTROPHYSICAL JOURNAL,934(1). |
| MLA | Shao, Chengyu,et al."Is Fermi 1544-0649 a Misaligned Blazar? Discovering the Jet Structure with Very Long Baseline Interferometry".ASTROPHYSICAL JOURNAL 934.1(2022). |
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来源：云南天文台
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