NAOC Open IR
A Delta R similar to 9.5 mag Superflare of an Ultracool Star Detected by the SVOM/GWAC System
Xin, L. P.1; Li, H. L.1; Wang, J.1,2; Han, X. H.1; Xu, Y.1; Meng, X. M.1; Cai, H. B.1; Huang, L.1; Lu, X. M.1; Qiu, Y. L.1; Wang, X. G.2; Liang, E. W.2; Dai, Z. G.3,4; Wang, X. Y.3,4; Wu, C.1; Zhang, J. B.5; Li, G. W.1; Turpin, D.1,6; Feng, Q. C.1; Deng, J. S.1,7; Sun, S. S.1,2,7; Zheng, T. C.2; Yang, Y. G.8; Wei, J. Y.1,7
2021-03-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume909Issue:2Pages:9
AbstractWe report the detection and follow-up of a superstellar flare GWAC 181229A with an amplitude of Delta R similar to 9.5 mag on an M9-type star by SVOM/GWAC and the dedicated follow-up telescopes. The estimated bolometric energy E-bol is (5.56-9.25) x 10(34) erg, which makes the event one of the most powerful flares seen on ultracool stars. The magnetic strength is inferred to be 3.6-4.7 kG. Thanks to sampling with a cadence of 15 s, a new component near the peak time with a very steep decay is detected in the R-band light curve, followed by the two-component flare template given by Davenport et al. An effective temperature of 5340 40 K is measured by fitting a blackbody shape to the spectrum in the shallower phase during the flare. The filling factors of the flare are estimated to be similar to 30% and 19% at the peak time and at 54 minutes after the first detection. The detection of this particular event with large amplitude, huge emitted energy, and a new component demonstrates that high-cadence sky monitoring cooperation with fast follow-up observations is very important for understanding the violent magnetic activity.
KeywordFlare stars M dwarf stars Stellar flares Spectroscopy
Funding OrganizationNational K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
DOI10.3847/1538-4357/abdd1b
WOS KeywordLOW-MASS STARS ; MULTIWAVELENGTH OBSERVATIONS ; FLARE ; SPECTRA
Language英语
Funding ProjectNational K&D Program of China[2020YFE0202100] ; National Natural Science Foundation of China[11473036] ; National Natural Science Foundation of China[11273027] ; National Natural Science Foundation of China[11533003] ; National Natural Science Foundation of China[11973055] ; National Natural Science Foundation of China[U1831207] ; National Natural Science Foundation of China[11873003] ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences[XDA15052600] ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences[XDA15016500] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB23040000] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
Funding OrganizationNational K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National K&D Program of China ; National K&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000627290500001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79148
Collection中国科学院国家天文台
Corresponding AuthorXin, L. P.; Wei, J. Y.
Affiliation1.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Space Astron & Technol, Beijing 100101, Peoples R China
2.Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China
3.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Peoples R China
4.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
6.Univ Paris Saclay, CNRS, CEA, Dept Astrophys Instrumentat & Modelisat Paris Sac, F-91191 Gif Sur Yvette, France
7.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China
8.Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China
Recommended Citation
GB/T 7714
Xin, L. P.,Li, H. L.,Wang, J.,et al. A Delta R similar to 9.5 mag Superflare of an Ultracool Star Detected by the SVOM/GWAC System[J]. ASTROPHYSICAL JOURNAL,2021,909(2):9.
APA Xin, L. P..,Li, H. L..,Wang, J..,Han, X. H..,Xu, Y..,...&Wei, J. Y..(2021).A Delta R similar to 9.5 mag Superflare of an Ultracool Star Detected by the SVOM/GWAC System.ASTROPHYSICAL JOURNAL,909(2),9.
MLA Xin, L. P.,et al."A Delta R similar to 9.5 mag Superflare of an Ultracool Star Detected by the SVOM/GWAC System".ASTROPHYSICAL JOURNAL 909.2(2021):9.
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