Do Long-cadence Data of the Kepler Spacecraft Capture Basic Properties of Flares?

doi:10.3847/1538-4357/aabd31

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	Do Long-cadence Data of the Kepler Spacecraft Capture Basic Properties of Flares?
	Yang,Huiqin 1,2; Liu,Jifeng 1,2; Qiao,Erlin 1,2; Zhang,Haotong 1; Gao,Qing 1; Cui,Kaiming 1,2; Han,Henggeng 1,2
刊名	The Astrophysical Journal
	2018-05-25
卷号	859 期号:2
关键词	methods: analytical methods: statistical stars: flare
ISSN号	0004-637X
DOI	10.3847/1538-4357/aabd31
英文摘要	Abstract Flare research is becoming a burgeoning realm of interest in the study of stellar activity due to the launch of Kepler in 2009. Kepler provides data with two time resolutions, i.e., the long-cadence (LC) data with a time resolution of 30 minutes and the short-cadence (SC) data with a time resolution of 1 minute, both of which can be used to study stellar flares. In this paper, we search flares in light curves with both LC data and SC data, and compare them in aspects of the true-flare rate, the flare energy, the flare amplitude, and the flare duration. It is found that LC data systematically underestimated the energies of flares by 25%, and underestimated the amplitudes of flares by 60% compared with SC flares. The durations are systematically overestimated by 50% compared with SC flares. However, the above percentages are poorly constrained and there is a lot of scatter. About 60% of SC flares have not been detected by LC data. We investigate the limitation of LC data, and suggest that although LC data cannot reflect the detailed profiles of flares, they can also capture the basic properties of stellar flares.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0004-637X-859-2-AABD31
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/21705]
专题	中国科学院国家天文台
作者单位	1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China; yhq@nao.cas.cn 2.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
推荐引用方式 GB/T 7714	Yang,Huiqin,Liu,Jifeng,Qiao,Erlin,et al. Do Long-cadence Data of the Kepler Spacecraft Capture Basic Properties of Flares?[J]. The Astrophysical Journal,2018,859(2).
APA	Yang,Huiqin.,Liu,Jifeng.,Qiao,Erlin.,Zhang,Haotong.,Gao,Qing.,...&Han,Henggeng.(2018).Do Long-cadence Data of the Kepler Spacecraft Capture Basic Properties of Flares?.The Astrophysical Journal,859(2).
MLA	Yang,Huiqin,et al."Do Long-cadence Data of the Kepler Spacecraft Capture Basic Properties of Flares?".The Astrophysical Journal 859.2(2018).