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LEIA Discovery of the Longest-lasting and Most Energetic Stellar X-Ray Flare Ever Detected
Mao, Xuan1,2; Liu, He-Yang1; Wang, Song1,3; Ling, Zhixing1,2,3; Yuan, Weimin1,2; Cheng, Huaqing1; Pan, Haiwu1; Li, Dongyue1; Favata, Fabio4,5; Ji, Tuo6; Zhang JJ(张居甲)7,8,9; Zhao, Xinlin1,2; Wang, Jing1,10,11; Liu, Mingjun1,2; Liu, Yuan1; Cai, Zhiming12; Castro-Tirado, Alberto J.13,14; Dai, Yanfeng1; Deng, Licai1,2,15; Ding X(丁旭)7,9,16; Ji KF(季凯帆)2,7,9,16; Jin, Chichuan1,2,3; Lei, Yajuan1; Li, Huali1; Lin J(林隽)2,7,16,17; Liu, Huaqiu12; Liu, Shuai1; Sun, Hui1; Sun, Shengli18; Sun, Xiaojin18; Shi, Jianrong1,2; Wang JG(王建国)7,9; Wang, Jingxiu1,2; Wang, Wenxin1; Wei, Jianyan1,2; Xin, Liping1; Xiong DR(熊定荣)7; Zhang, Chen1,2; Zhang, Wenda1; Zhang, Yonghe12; Zhang, Xiaofeng12; Zhao, Donghua1; Zhou, Guiping1,2
发表期刊ASTROPHYSICAL JOURNAL (IF:5.551[JCR-2017],5.402[5-Year])
2025-02-20
卷号980期号:2
DOI10.3847/1538-4357/ada698
产权排序第7完成单位
收录类别SCI
摘要The Lobster Eye Imager for Astronomy (LEIA) detected a new X-ray transient on 2022 November 7, identified as a superflare event occurring on a nearby K-type giant star HD 251108. The flux increase was also detected in follow-up observations at X-ray, UV, and optical wavelengths. The flare lasted for about 40 days in soft X-ray observations, reaching a peak luminosity of similar to 1.1 x 1034 erg s-1 in 0.5-4.0 keV, which is roughly 60 times the quiescent luminosity. Optical brightening was observed for only one night. The X-ray light curve is well described by a double fast rise and exponential decay model, attributed to the cooling process of a loop arcade structure formed subsequent to the initial large loop with a half-length of similar to 1.9 x 1012 cm. Time-resolved X-ray spectra were fitted by a four-temperature apec model (with three components being the quiescent background), showing significant evolution of plasma temperature and emission measure over time. The estimated energy released in the LEIA band is similar to 3 x 1039 erg, suggesting that this is likely the most energetic X-ray stellar flare with the longest duration detected to date.
资助项目Strategic Priority Program on Space Science of Chinese Academy of Sciences[XDA15310000]; Strategic Priority Program on Space Science of Chinese Academy of Sciences[XDA15052100]; National Key Research and Development Programs of China (NKRDPC)[2022YFF0711404]; National Key Research and Development Programs of China (NKRDPC)[2021YFA0718500]; National Key Research and Development Programs of China (NKRDPC)[2019YFA0405504]; National Key Research and Development Programs of China (NKRDPC)[2019YFA0405000]; National Natural Science Foundation of China (NSFC)[12103061]; National Natural Science Foundation of China (NSFC)[11988101]; National Natural Science Foundation of China (NSFC)[11833002]; National Natural Science Foundation of China (NSFC)[12090042]; National Natural Science Foundation of China (NSFC)[12103047]; National Natural Science Foundation of China (NSFC)[12473016]; Strategic Priority Program on Space Science of Chinese Academy of Sciences[XDB41000000]; Strategic Priority Program on Space Science of Chinese Academy of Sciences[XDB0550200]; Spanish Ministry projects[PID2020-118491GB-I00]; Spanish Ministry projects[PID2023-151905OB-I00]; Junta de Andalucia[P20_010168]; MCIN/AEI
项目资助者Strategic Priority Program on Space Science of Chinese Academy of Sciences[XDA15310000, XDA15052100] ; National Key Research and Development Programs of China (NKRDPC)[2022YFF0711404, 2021YFA0718500, 2019YFA0405504, 2019YFA0405000] ; National Natural Science Foundation of China (NSFC)[12103061, 11988101, 11833002, 12090042, 12103047, 12473016] ; Strategic Priority Program on Space Science of Chinese Academy of Sciences[XDB41000000, XDB0550200] ; Spanish Ministry projects[PID2020-118491GB-I00, PID2023-151905OB-I00] ; Junta de Andalucia[P20_010168] ; MCIN/AEI[CEX2021-001131-S] ; [2022SKA0130102] ; [2022SKA0130100] ; [12273057] ; [12203071]
语种英语
学科领域天文学 ; 恒星与银河系 ; 星系与宇宙学
文章类型Article
出版者IOP Publishing Ltd
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:001426873900001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LOBSTER-EYE-IMAGER ; STATISTICAL PROPERTIES ; UNIVERSAL CORRELATION ; EMISSION MEASURE ; STARS ; SOLAR ; SUPERFLARES ; CATALOG ; TEMPERATURE ; DIAGNOSTICS
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文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/28173
专题南方基地
太阳物理研究组
中国科学院天体结构与演化重点实验室
天文技术实验室
作者单位1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China; liuheyang@nao.cas.cn, songw@bao.ac.cn, lingzhixing@bao.ac.cn, wmy@nao.cas.cn;
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
3.Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University, Beijing 102206, People's Republic of China;
4.INAF—Osservatorio Astronomico di Palermo, Piazza del Parlamento, 1, 90134 Palermo, Italy;
5.Department of Physics, Imperial College London, Exhibition Road, London SW7 2AZ, UK;
6.Polar Research Institute of China, Shanghai 200136, People's Republic of China;
7.Yunnan Observatories,Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
8.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People's Republic of China;
9.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
10.Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning 530004, People's Republic of China;
11.GXU-NAOC Center for Astrophysics and Space Sciences, Nanning 530004, People's Republic of China;
12.Innovation Academy for Microsatellites, Chinese Academy of Sciences, Shanghai 201210, People's Republic of China;
13.Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada, Spain;
14.Unidad Asociada al CSIC, Departamentode Ingeniería de Sistemas y Automática, Escuela de Ingenierías, Universidad de Málaga, Málaga, Spain;
15.Department of Astronomy, China West Normal University, Nanchong 637002, People's Republic of China;
16.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China;
17.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming 650216, People's Republic of China;
18.Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, People's Republic of China
推荐引用方式
GB/T 7714		 Mao, Xuan,Liu, He-Yang,Wang, Song,et al. LEIA Discovery of the Longest-lasting and Most Energetic Stellar X-Ray Flare Ever Detected[J]. ASTROPHYSICAL JOURNAL,2025,980(2).
APA Mao, Xuan.,Liu, He-Yang.,Wang, Song.,Ling, Zhixing.,Yuan, Weimin.,...&Zhou, Guiping.(2025).LEIA Discovery of the Longest-lasting and Most Energetic Stellar X-Ray Flare Ever Detected.ASTROPHYSICAL JOURNAL,980(2).
MLA Mao, Xuan,et al."LEIA Discovery of the Longest-lasting and Most Energetic Stellar X-Ray Flare Ever Detected".ASTROPHYSICAL JOURNAL 980.2(2025).
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