An Ejection Event Captured by Very Long Baseline Interferometry during the Outburst of Swift J1727.8-1613
文献类型：期刊论文
| 作者 | Cao, Hongmin1; Yang, Jun9; Frey, Sandor6,7,8; Wood, Callan M.5; Miller-Jones, James C. A.5; Gabanyi, Krisztina E.2,3,4,7,8; Migliori, Giulia13; Giroletti, Marcello13; Cui, Lang12; An, Tao11 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2025-07-01 |
| 卷号 | 987期号:1页码:L14 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ade0ab |
| 产权排序 | 11 |
| 英文摘要 | We observed a newly discovered Galactic black hole X-ray binary Swift J1727.8-1613 with the European VLBI Network (EVN) at 5 GHz. The observation was conducted immediately following a radio quenching event detected by the Karl G. Jansky Very Large Array. The visibility amplitude evolution over time reveals a large-amplitude radio flare and is consistent with an ejection event. The data can be interpreted either as a stationary component (i.e., the radio core) and a moving blob, or as two blobs moving away from the core symmetrically in opposite directions. The initial angular separation speed of the two components was estimated to 30 mas day-1. We respectively fitted a single circular Gaussian model component to each of 14 sliced visibility data sets. For the case of including only European baselines, during the final hour of the EVN observation, the fitted sizes exhibited linear expansion, indicating that the measured sizes were dominated by the angular separation of the two components. The 6 hr EVN observation took place in a rising phase of an even larger 4 day long radio flare, implying that the ejection events were quite frequent and therefore continuous radio monitoring is necessary to correctly estimate the power of the transient jet. Combined with X-ray monitoring data, the radio quenching and subsequent flares/ejections were likely driven by instabilities in the inner hot accretion disk. |
| WOS关键词 | X-RAY-POLARIZATION ; VLBI OBSERVATIONS ; TRANSIENT JETS ; CYGNUS X-1 ; BINARY ; EVOLUTION ; TRACKING ; CATALOG ; COMPACT ; MODEL |
| 资助项目 | Hebei Natural Science Foundation of China[A2022408002] ; Basic Research Plan for Key Research Projects of Higher Education Institutions in Henan Province[25A160001] ; Hungarian National Research, Development and Innovation Office (NKFIH OTKA grant)[K134213] ; Hungarian National Research, Development and Innovation Office (NKFIH OTKA grant)[TKP2021-NKTA-6] ; HUN-REN |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001517733000001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Hebei Natural Science Foundation of China ; Basic Research Plan for Key Research Projects of Higher Education Institutions in Henan Province ; Hungarian National Research, Development and Innovation Office (NKFIH OTKA grant) ; HUN-REN |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7887]  |
| 专题 | 星系宇宙学研究团组 |
| 通讯作者 | Cao, Hongmin |
| 作者单位 | 1.Shangqiu Normal Univ, Sch Elect & Elect Engn, 298 Wenhua Rd, Shangqiu 476000, Henan, Peoples R China 2.Nicolaus Copernicus Univ, Inst Astron, Fac Phys Astron & Informat, Grudziadzka 5, PL-87100 Torun, Poland 3.Eotvos Lorand Univ, HUN REN ELTE Extragalact Astrophys Res Grp, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary 4.Eotvos Lorand Univ, Inst Phys & Astron, Dept Astron, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary 5.Curtin Univ, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia 6.Eotvos Lorand Univ, Inst Phys & Astron, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary 7.MTA Ctr Excellence, CSFK, Konkoly Thege Mikl Ut 15-17, Budapest, Hungary 8.HUN REN Res Ctr Astron & Earth Sci, Konkoly Observ, Konkoly Thege Mikl Ut 15-17, H-1121 Budapest, Hungary 9.Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, S-43992 Onsala, Sweden 10.Changzhou Inst Technol, Sch Comp Informat Engn, Changzhou 213032, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Hongmin,Yang, Jun,Frey, Sandor,et al. An Ejection Event Captured by Very Long Baseline Interferometry during the Outburst of Swift J1727.8-1613[J]. ASTROPHYSICAL JOURNAL LETTERS,2025,987(1):L14. |
| APA | Cao, Hongmin.,Yang, Jun.,Frey, Sandor.,Wood, Callan M..,Miller-Jones, James C. A..,...&Wang, Weihua.(2025).An Ejection Event Captured by Very Long Baseline Interferometry during the Outburst of Swift J1727.8-1613.ASTROPHYSICAL JOURNAL LETTERS,987(1),L14. |
| MLA | Cao, Hongmin,et al."An Ejection Event Captured by Very Long Baseline Interferometry during the Outburst of Swift J1727.8-1613".ASTROPHYSICAL JOURNAL LETTERS 987.1(2025):L14. |
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