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RESOLVING THE FAN-SPINE RECONNECTION GEOMETRY OF A SMALL-SCALE CHROMOSPHERIC JET EVENT WITH THE NEW SOLAR TELESCOPE
Zeng, Zhicheng1,2; Chen, Bin1,3; Ji, Haisheng2,4; Goode, Philip R.1,2; Cao, Wenda1,2
2016-03-01
Source PublicationASTROPHYSICAL JOURNAL LETTERS
Volume819Issue:1
AbstractJets are ubiquitously present in both quiet and active regions on the Sun. They are widely believed to be driven by magnetic reconnection. A fan-spine structure has been frequently reported in some coronal jets and flares, and has been regarded as a signature of ongoing magnetic reconnection in a topology consisting of a magnetic null connected by a fan-like separatrix surface and a spine. However, for small-scale chromospheric jets, clear evidence of such structures is rather rare, although it has been implied in earlier works that showed an inverted-Y-shaped feature. Here we report high-resolution (0 16) observations of a small-scale chromospheric jet obtained by the New Solar Telescope (NST) using 10830 angstrom filtergrams. Bi-directional flows were observed across the separatrix regions in the 10830 angstrom images, suggesting that the jet was produced due to magnetic reconnection. At the base of the jet, a fan-spine structure was clearly resolved by the NST, including the spine and the fan-like surface, as well as the loops before and after the reconnection. A major part of this fan-spine structure, with the exception of its bright footpoints and part of the base arc, was invisible in the extreme ultraviolet and soft X-ray images (observed by the Atmosphere Imaging Assembly and the X-Ray Telescope, respectively), indicating that the reconnection occurred in the upper chromosphere. Our observations suggest that the evolution of this chromospheric jet is consistent with a two-step reconnection scenario proposed by Torok et al.
KeywordSun: Activity Sun: Chromosphere Sun: Corona
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3847/2041-8205/819/1/L3
WOS KeywordX-RAY TELESCOPE ; DYNAMICS-OBSERVATORY SDO ; FLUX EMERGENCE ; EMERGING FLUX ; MAGNETIC-FLUX ; CORONAL HOLES ; ANEMONE JETS ; HINODE ; FIELD ; SIMULATIONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000371044200003
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16152
Collection太阳活动的多波段观测研究团组
Affiliation1.New Jersey Inst Technol, Ctr Solar Terr Res, 323 Martin Luther King Blvd, Newark, NJ 07102 USA
2.Big Bear Solar Observ, 40386 North Shore Lane, Big Bear City, CA 92314 USA
3.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Zeng, Zhicheng,Chen, Bin,Ji, Haisheng,et al. RESOLVING THE FAN-SPINE RECONNECTION GEOMETRY OF A SMALL-SCALE CHROMOSPHERIC JET EVENT WITH THE NEW SOLAR TELESCOPE[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,819(1).
APA Zeng, Zhicheng,Chen, Bin,Ji, Haisheng,Goode, Philip R.,&Cao, Wenda.(2016).RESOLVING THE FAN-SPINE RECONNECTION GEOMETRY OF A SMALL-SCALE CHROMOSPHERIC JET EVENT WITH THE NEW SOLAR TELESCOPE.ASTROPHYSICAL JOURNAL LETTERS,819(1).
MLA Zeng, Zhicheng,et al."RESOLVING THE FAN-SPINE RECONNECTION GEOMETRY OF A SMALL-SCALE CHROMOSPHERIC JET EVENT WITH THE NEW SOLAR TELESCOPE".ASTROPHYSICAL JOURNAL LETTERS 819.1(2016).
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