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VLBI detection of the AE Aqr twin, LAMOST J024048.51+195226.9

文献类型：期刊论文

作者Jiang, Pengfei6,7; Cui, Lang1,6,8; Liu, Xiang1,6,8; Zhang, Bo5; Huang, Yongfeng4; Cao, Hongmin3; An, Tao5,6; Yang, Jun2; Shu, Fengchun5; Tan, Guiping6
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2024-02-01
卷号528期号:1页码:L112-L116
关键词techniques: high angular resolution stars: magnetic field white dwarfs radio continuum: stars
ISSN号0035-8711
DOI10.1093/mnrasl/slad178
产权排序1
英文摘要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.
WOS关键词MAGNETIC PROPELLER ; RADIO OUTBURSTS ; ACCURACY
资助项目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研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001343895400001
出版者OXFORD UNIV PRESS
资助机构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
源URL[http://ir.xao.ac.cn/handle/45760611-7/7108]  
专题星系宇宙学研究团组
通讯作者Cui, Lang
作者单位1.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China
2.Chalmers Univ Technol, Onsala Space Observ, Dept Space Earth & Environm, SE-43992 Onsala, Sweden
3.Shangqiu Normal Univ, Sch Elect & Elect Engn, Wenhua Rd 298, Shangqiu 476000, Henan, Peoples R China
4.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China
5.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
6.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China
7.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
8.Chinese Acad Sci, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Peoples R China
推荐引用方式
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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