NAOC Open IR
Energy Partition in Four Confined Circular-Ribbon Flares
Cai, Z. M.1,2; Zhang, Q. M.1,2,3; Ning, Z. J.1,2; Su, Y. N.1,2; Ji, H. S.1,2
2021-04-01
Source PublicationSOLAR PHYSICS
ISSN0038-0938
Volume296Issue:4Pages:18
AbstractIn this study, we investigate the energy partition of four confined circular-ribbon flares (CRFs) that occurred close to solar disk center. The flares are observed simultaneously by the Solar Dynamics Observatory (SDO), the Geostationary Operational Environmental Satellites (GOES), and the Ramaty Hight Energy Solar Spectroscopic Imager (RHESSI). We calculate different energy components, including the radiative outputs in the ranges 1 - 8 angstrom, 1 - 70 angstrom, and 70 - 370 angstrom, total radiative loss, peak thermal energy derived from GOES and RHESSI, nonthermal energy in flare-accelerated electrons, and magnetic free energy before the flares. It is found that the values of energy components increase systematically with the flare class, indicating that more energy is involved in larger flares. The magnetic free energies (E-mag) are larger than the nonthermal energies (E-nth) and radiative outputs, which is consistent with the magnetic nature of flares. The ratio E-nth/E-mag of the four flares, being 0.70 - 0.76, is considerably higher than that of eruptive flares. Hence, this ratio may serve as an important factor for discriminating confined from eruptive flares. The nonthermal energies are sufficient to provide the heating requirements including the peak thermal energy and radiative loss. Our findings impose constraints on theoretical models of confined CRFs and have potential implications on space weather forecast.
KeywordFlares, dynamics Flares, energetic particles Heating, in flares Magnetic fields, corona
Funding OrganizationNSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; NSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; NSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; NSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS
DOI10.1007/s11207-021-01805-5
Language英语
Funding ProjectNSFC[11790302] ; NSFC[11773079] ; NSFC[41761134088] ; NSFC[11473071] ; International Cooperation and Interchange Program[11961131002] ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories[KLSA202006] ; Strategic Priority Research Program on Space Science, CAS[XDA15052200] ; Strategic Priority Research Program on Space Science, CAS[XDA15320301]
Funding OrganizationNSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; NSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; NSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; NSFC ; NSFC ; International Cooperation and Interchange Program ; International Cooperation and Interchange Program ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; CAS Key Laboratory of Solar Activity ; CAS Key Laboratory of Solar Activity ; National Astronomical Observatories ; National Astronomical Observatories ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000639277600002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78294
Collection中国科学院国家天文台
Corresponding AuthorZhang, Q. M.
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210023, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
3.Chinese Acad Sci, CAS Key Lab Solar Act, Natl Astron Observ, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Cai, Z. M.,Zhang, Q. M.,Ning, Z. J.,et al. Energy Partition in Four Confined Circular-Ribbon Flares[J]. SOLAR PHYSICS,2021,296(4):18.
APA Cai, Z. M.,Zhang, Q. M.,Ning, Z. J.,Su, Y. N.,&Ji, H. S..(2021).Energy Partition in Four Confined Circular-Ribbon Flares.SOLAR PHYSICS,296(4),18.
MLA Cai, Z. M.,et al."Energy Partition in Four Confined Circular-Ribbon Flares".SOLAR PHYSICS 296.4(2021):18.
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