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Characteristic time of stellar flares on Sun-like stars

文献类型：期刊论文

作者Yan, Y.5,6,7,8; He, H.4,7,8; Li, C.3,5; Esamdin, A.2,4; Tan, B. L.4,7,8; Zhang, L. Y.1; Wang, H.6
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2021-07-01
卷号505期号:1页码:L79-L83
ISSN号0035-8711
关键词stars: activity stars: flare stars: solar-type
DOI10.1093/mnrasl/slab055
通讯作者Yan, Y.(yyan@nao.cas.cn) ; He, H.(hehan@nao.cas.cn)
英文摘要Using the short-cadence data (1-min interval) of the Kepler space telescope, we conducted a statistical analysis for the characteristic time of stellar flares on Sun-like stars (SLS). Akin to solar flares, stellar flares show rise and decay lightcurve profiles, which reflect the two distinct phases (rise phase and decay phase) of the flare process. We derived characteristic times of the two phases for stellar flares of SLS, resulting in a median rise time of about 5.9 min and a median decay time of 22.6 min. It is found that both the rise time and the decay time of the stellar flares follow a lognormal distribution. The peak positions of the lognormal distributions for flare rise time and decay time are 3.5 min and 14.8 min, respectively. These time values for stellar flares are similar to the time-scale of solar flares, which supports the idea that stellar flares and solar flares have the same physical mechanism. The statistical results obtained in this work for SLS can be a benchmark of flare characteristic times when comparing with other types of stars.
WOS关键词STATISTICAL PROPERTIES ; MAGNETIC ACTIVITY ; SOLAR ; KEPLER ; SUPERFLARES
资助项目National Natural Science Foundation of China[11693002] ; National Natural Science Foundation of China[11673012] ; National Natural Science Foundation of China[11973059] ; National Key R&D Program of China[2019YFA0405000] ; CAS ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; CAS Strategic Pioneer Program on Space Science[XDA15052200] ; Astronomical Big Data Joint Research Center ; Alibaba Cloud ; 'Integration of Space-and Ground-based Instruments' project of the China National Space Administration ; NASA Science Mission Directorate ; NASA[NAS 5-26555]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000722248100005
资助机构National Natural Science Foundation of China ; National Key R&D Program of China ; CAS ; Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; CAS Strategic Pioneer Program on Space Science ; Astronomical Big Data Joint Research Center ; Alibaba Cloud ; 'Integration of Space-and Ground-based Instruments' project of the China National Space Administration ; NASA Science Mission Directorate ; NASA
源URL[http://ir.xao.ac.cn/handle/45760611-7/4377]  
专题新疆天文台_光学天文与技术应用研究室
通讯作者Yan, Y.; He, H.
作者单位1.Guizhou Univ, Coll Phys, Guiyang 550025, Peoples R China
2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
3.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China
6.New Jersey Inst Technol, Ctr Solar Terr Res, Newark, NJ 07102 USA
7.Chinese Acad Sci, CAS Key Lab Solar Act, Beijing 100101, Peoples R China
8.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Y.,He, H.,Li, C.,et al. Characteristic time of stellar flares on Sun-like stars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,505(1):L79-L83.
APA Yan, Y..,He, H..,Li, C..,Esamdin, A..,Tan, B. L..,...&Wang, H..(2021).Characteristic time of stellar flares on Sun-like stars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,505(1),L79-L83.
MLA Yan, Y.,et al."Characteristic time of stellar flares on Sun-like stars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 505.1(2021):L79-L83.

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来源：新疆天文台

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