Institutional Repository of Radio Astronomy Research Laboratory
| VLBI astrometry on the white dwarf pulsar AR Scorpii | |
Jiang, Pengfei1,2 ; Cui, Lang1,3; Yang, Jun4; Zhang, Bo5; Xu, Shuangjing5,6; Shu, Fengchun5; Jiang, Wu5; Chen, Wen2,7; Li, Guanghui1; Xia, Bo5; Weston, Stuart8; Gulyaev, Sergei8; Cao, Hongmin9; Liu, Xiang1,3; An, Tao1,5
| |
| 2023-02-01 | |
| Source Publication | Monthly Notices of the Royal Astronomical Society
 |
| ISSN | 0035-8711 |
| Volume | 520Issue:2Pages:2942-2951 |
| Contribution Rank | 1 |
| Abstract | AR Scorpii (AR Sco), the only-known radio-pulsing white dwarf binary, shows unusual pulsating emission at the radio, infrared, optical, and ultraviolet bands. To determine its astrometric parameters at the radio band independently, we conducted multi-epoch Very Long Baseline Interferometry (VLBI) phase-referencing observations with the European VLBI Network at 5 GHz and the Chinese VLBI Network plus the Warkworth 30-m telescope (New Zealand) at 8.6 GHz. By using the differential VLBI astrometry, we provide high-precision astrometric measurements on the parallax (pi = 8.52(-0.07)(+0.04) mas) and proper motion (mu(alpha) = 9.48(-0.07)(+0.04) mas yr(-1), mu(delta) = -51.32(-0.38)(+0.22) mas yr (-1)). The new VLBI results agree with the optical Gaia astrometry. Our kinematic analysis reveals that the Galactic space velocities of AR Sco are quite consistent with that of both intermediate polars and polars. Combined with the previous tightest VLBI constraint on the size, our parallax distance suggests that the radio emission of AR Sco should be located within the light cylinder of its white dwarf. |
| Keyword | techniques: high angular resolution parallaxes pulsars: individual: AR Sco white dwarfs radio continuum: stars x-ray optical observations emission geometry radio-emission black-hole binary mass sco kinematics herculis Astronomy & Astrophysics |
| Subtype | Article |
| DOI | 10.1093/mnras/stad327 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000941753400005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6642 |
| Collection | 射电天文研究室_星系宇宙学研究团组 科研仪器设备产出_利用南山26米射电望远镜（NSRT）观测数据的文章 |
| Corresponding Author | Cui, Lang |
| Affiliation | 1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, 830011 Urumqi, P. R. China; 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, 100049 Beijing, P. R. China; 3.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 150 Science 1-Street, 830011 Urumqi, P. R. China; 4.Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden; 5.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 200030 Shanghai, P. R. China; 6.Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea; 7.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, Yunnan, P.R. China; 8.Institute for Radio Astronomy and Space Research, A uc kland University of Technology, Private Bag 92006, A uc kland 1142, New Zealand; 9.School of Electronic and Electrical Engineering, Shangqiu Normal University, Wenhua Road 298, Shangqiu, Henan 476000, P. R. China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Jiang, Pengfei,Cui, Lang,Yang, Jun,et al. VLBI astrometry on the white dwarf pulsar AR Scorpii[J]. Monthly Notices of the Royal Astronomical Society,2023,520(2):2942-2951. |
| APA | Jiang, Pengfei.,Cui, Lang.,Yang, Jun.,Zhang, Bo.,Xu, Shuangjing.,...&An, Tao.(2023).VLBI astrometry on the white dwarf pulsar AR Scorpii.Monthly Notices of the Royal Astronomical Society,520(2),2942-2951. |
| MLA | Jiang, Pengfei,et al."VLBI astrometry on the white dwarf pulsar AR Scorpii".Monthly Notices of the Royal Astronomical Society 520.2(2023):2942-2951. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jiang-2023-VLBI astr（1481KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment