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Modeling the IRIS Lines During a Flare. I. The Blue-wing Enhancement in the Mg II k Line
Hong, Jie1,2; Li, Ying3; Ding, M. D.1,2; Zhou, Yu-Hao1,4
2020-02-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume890Issue:2Pages:11
Corresponding AuthorHong, Jie(jiehong@nju.edu.cn)
AbstractThe Interface Region Imaging Spectrograph (IRIS) Mg II k line serves as a very good tool to diagnose the heating processes in solar flares. Recent studies have shown that apart from the usual red asymmetries that are interpreted as the result of condensation downflows, this line could also show a blue-wing enhancement. To investigate how such a blue asymmetry is formed, we perform a grid of radiative hydrodynamic simulations and calculate the corresponding line profiles. We find that such a spectral feature is likely to originate from the upward plasma motion in the upper chromosphere. However, the formation region that is responsible for the blue-wing enhancement could be located in an evaporation region, in an upward-moving blob, and even an upward-moving condensation region. We discuss how the electron beam parameters affect these different dynamics of the atmosphere.
DOI10.3847/1538-4357/ab6d05
WOS KeywordLOOP RADIATIVE HYDRODYNAMICS ; DYNAMICS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000522100700024
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35821
Collection中国科学院紫金山天文台
Corresponding AuthorHong, Jie
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China
2.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210034, Peoples R China
4.Katholieke Univ Leuven, Ctr Math Plasma Astrophys CmPA, Celestijnenlaan 200B, B-3001 Leuven, Belgium
Recommended Citation
GB/T 7714
Hong, Jie,Li, Ying,Ding, M. D.,et al. Modeling the IRIS Lines During a Flare. I. The Blue-wing Enhancement in the Mg II k Line[J]. ASTROPHYSICAL JOURNAL,2020,890(2):11.
APA Hong, Jie,Li, Ying,Ding, M. D.,&Zhou, Yu-Hao.(2020).Modeling the IRIS Lines During a Flare. I. The Blue-wing Enhancement in the Mg II k Line.ASTROPHYSICAL JOURNAL,890(2),11.
MLA Hong, Jie,et al."Modeling the IRIS Lines During a Flare. I. The Blue-wing Enhancement in the Mg II k Line".ASTROPHYSICAL JOURNAL 890.2(2020):11.
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