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Catalog and Statistical Examinations of Ly alpha Solar Flares from GOES/EUVS-E Measurements
Lu, Lei1,2; Feng, Li1; Li, Dong1,2; Ying, Beili1; Li, Hui1; Gan, Weiqun1; Li, Youping1; Zhou, Jiujiu3
2021-03-01
Source PublicationASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
ISSN0067-0049
Volume253Issue:1Pages:14
AbstractThe Lyman-alpha (Ly alpha) line of neutral hydrogen at 121.6 nm is by far the brightest emission line in the vacuum ultraviolet spectral range of the Sun. The emission at this line could be a major energy input to the upper layers of the Earth's atmosphere, strongly impacting the geospace environment. The Geostationary Operational Environmental Satellite (GOES) series, starting with GOES-13, began to carry a multichannel Extreme UltraViolet Sensor (EUVS) with one channel (E-channel) targeting the Ly alpha line. In the present work, we produce a Ly alpha flare catalog from the GOES-15/EUVS-E data between 2010 April 8 and 2016 June 6 with an automatic flare detection algorithm. This algorithm is designed to search events at various scales and find their real start and end times. Based on the obtained flare list, statistics on the temporal behavior such as the duration, rise, and decay times, and the event asymmetries of Ly alpha flares is presented. On average (defined by the median of the distributions), the duration, rise and decay times of the flares were estimated to be 20.8 minutes, 5.6 minutes, and 14.2 minutes, respectively. We also discuss the frequency distributions of the peak flux and the fluence of Ly alpha flares, both of which reveal power-law behaviors with power-law indices of 2.71 0.06 and 2.42 0.06, respectively, implying that more flares are accumulated at small scales and these small-scale events play an important role in explaining the violent solar energy release.
KeywordAstrostatistics distributions Solar flares Solar ultraviolet emission Algorithms
Funding OrganizationNSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; NSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; NSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; NSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association
DOI10.3847/1538-4365/abd79b
Language英语
Funding ProjectNSFC[U1731241] ; NSFC[11921003] ; NSFC[11973012] ; CAS Strategic Pioneer Program on Space Science[XDA15052200] ; CAS Strategic Pioneer Program on Space Science[XDA15320103] ; CAS Strategic Pioneer Program on Space Science[XDA15320301] ; Sino-German Science Center[M-0068] ; National Key R&D Program of China[2018YFA0404200] ; Youth Innovation Promotion Association
Funding OrganizationNSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; NSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; NSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association ; NSFC ; NSFC ; CAS Strategic Pioneer Program on Space Science ; CAS Strategic Pioneer Program on Space Science ; Sino-German Science Center ; Sino-German Science Center ; National Key R&D Program of China ; National Key R&D Program of China ; Youth Innovation Promotion Association ; Youth Innovation Promotion Association
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000629941200001
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78639
Collection中国科学院国家天文台
Corresponding AuthorLu, Lei
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100101, Peoples R China
3.Middlebury Coll, Dept Math, Middlebury, VT 05753 USA
Recommended Citation
GB/T 7714
Lu, Lei,Feng, Li,Li, Dong,et al. Catalog and Statistical Examinations of Ly alpha Solar Flares from GOES/EUVS-E Measurements[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2021,253(1):14.
APA Lu, Lei.,Feng, Li.,Li, Dong.,Ying, Beili.,Li, Hui.,...&Zhou, Jiujiu.(2021).Catalog and Statistical Examinations of Ly alpha Solar Flares from GOES/EUVS-E Measurements.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,253(1),14.
MLA Lu, Lei,et al."Catalog and Statistical Examinations of Ly alpha Solar Flares from GOES/EUVS-E Measurements".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 253.1(2021):14.
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