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| VLBI detection of the AE Aqr twin, LAMOST J024048.51+195226.9 | |
Jiang, Pengfei1,2 ; Cui, Lang1,3,4; Liu, Xiang1,3,4; Zhang, Bo5; Huang, Yongfeng6; Cao, Hongmin7; An, Tao1,5; Yang, Jun8; Shu, Fengchun5; Tan, Guiping1; Yuan, Jianping1
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| 2024-02-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 528Issue:1Pages:L112-L116 |
| Contribution Rank | 1 |
| Abstract | LAMOST J024048.51+195226.9 (J0240+1952) was recently identified as the second AE Aquarii (AE Aqr)-type cataclysmic variable, possessing the fastest known rotating white dwarf. We performed a Very Long Baseline Interferometry (VLBI) observation of J0240+1952 utilizing the European VLBI Network at 1.7GHz, to obtain the first view of the radio morphology on mas scale. Our high-resolution VLBI image clearly shows that the radio emission is compact on mas scale (less than or similar to 2AU), with no evidence for a radio jet or extended emission. The compact radio source has an average flux density of similar to 0.37mJy, and its brightness temperature is given at greater than or similar to 2.3 x 10(7)K, confirming a non-thermal origin. The emission exhibits irregular variations on a time-scale of tens of minutes, similar to the radio flares seen in AE Aqr. The measured VLBI position of J0240+1952 is consistent with that derived from Gaia. Our results favour the model in which the radio emission is attributed to a superposition of synchrotron radiation from expanding magnetized blobs of this system. |
| Keyword | techniques: high angular resolution stars: magnetic field white dwarfs radio continuum: stars |
| DOI | 10.1093/mnrasl/slad178 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | MAGNETIC PROPELLER ; RADIO OUTBURSTS ; ACCURACY |
| Funding Project | National SKA Program of China[2022SKA0120102] ; NSFC[U2031212] ; NSFC[12233002] ; CAS 'Light of West China' Program[2021-XBQNXZ-005] ; National Key R&D Program of China[2023YFE0102300] ; Urumqi Nanshan Astronomy and Deep Space Exploration Observation and Research Station of Xinjiang[XJYWZ2303] ; North American radio astronomy institutes[EJ024] ; European Union[RI-261525 NEX-PReS] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001343895400001 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | National SKA Program of China ; NSFC ; CAS 'Light of West China' Program ; National Key R&D Program of China ; Urumqi Nanshan Astronomy and Deep Space Exploration Observation and Research Station of Xinjiang ; North American radio astronomy institutes ; European Union |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7109 |
| Collection | 射电天文研究室_星系宇宙学研究团组 |
| Corresponding Author | Cui, Lang |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Peoples R China 4.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China 5.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 6.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China 7.Shangqiu Normal Univ, Sch Elect & Elect Engn, Wenhua Rd 298, Shangqiu 476000, Henan, Peoples R China 8.Chalmers Univ Technol, Onsala Space Observ, Dept Space Earth & Environm, SE-43992 Onsala, Sweden |
| 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,Liu, Xiang,et al. VLBI detection of the AE Aqr twin, LAMOST J024048.51+195226.9[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,528(1):L112-L116. |
| APA | Jiang, Pengfei.,Cui, Lang.,Liu, Xiang.,Zhang, Bo.,Huang, Yongfeng.,...&Yuan, Jianping.(2024).VLBI detection of the AE Aqr twin, LAMOST J024048.51+195226.9.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,528(1),L112-L116. |
| MLA | Jiang, Pengfei,et al."VLBI detection of the AE Aqr twin, LAMOST J024048.51+195226.9".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 528.1(2024):L112-L116. |
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| Jiang-2024-VLBI dete（585KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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