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HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS
Ni L(倪蕾)1,2; Lin J(林隽)1; Ilia I. Roussev3; Brigitte Schmieder4
Source PublicationASTROPHYSICAL JOURNAL
2016-12-01
Volume832Issue:2
DOI10.3847/0004-637X/832/2/195
Contribution Rank第1完成单位
Indexed BySCI
KeywordMagnetic Reconnection Magnetohydrodynamics (Mhd) Shock Waves Sun: Chromosphere
Abstract

We simulate several magnetic reconnection processes in the low solar chromosphere/photosphere; the radiation cooling, heat conduction and ambipolar diffusion are all included. Our numerical results indicate that both the high temperature (greater than or similar to 8 x 10(4) K) and low temperature (similar to 10(4) K) magnetic reconnection events can happen in the low solar atmosphere (100-600 km above the solar surface). The plasma beta controlled by plasma density and magnetic fields is one important factor to decide how much the plasma can be heated up. The low temperature event is formed in a high beta magnetic reconnection process, Joule heating is the main mechanism to heat plasma and the maximum temperature increase is only several thousand Kelvin. The high temperature explosions can be generated in a low beta magnetic reconnection process, slow and fast-mode shocks attached at the edges of the well developed plasmoids are the main physical mechanisms to heat the plasma from several thousand Kelvin to over 8 x 10(4) K. Gravity in the low chromosphere can strongly hinder the plasmoid instability and the formation of slow-mode shocks in a vertical current sheet. Only small secondary islands are formed; these islands, however, are not as well developed as those in the horizontal current sheets. This work can be applied to understand the heating mechanism in the low solar atmosphere and could possibly be extended to explain the formation of common low temperature Ellerman bombs (similar to 10(4) K) and the high temperature Interface Region Imaging Spectrograph (IRIS) bombs (greater than or similar to 8 x 10(4)) in the future.

Funding ProjectISSI ; NSFC[11573064] ; NSFC[11203069] ; NSFC[11273055] ; NSFC[11333007] ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant[KLSA201404] ; Program 973[2013CBA01503] ; CAS[XDB09040202] ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund[nsfc2015-460] ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund[nsfc2015-463]
Funding OrganizationISSI ; NSFC[11573064, 11203069, 11273055, 11333007] ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant[KLSA201404] ; Program 973[2013CBA01503] ; CAS[XDB09040202] ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund[nsfc2015-460, nsfc2015-463]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
Archive Date2016-12-02
WOS IDWOS:000390490100055
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordFLUX EMERGENCE IMPLICATIONS ; WHITE-LIGHT FLARES ; ELLERMAN BOMBS ; NUMERICAL SIMULATIONS ; FINE-STRUCTURES ; CHROMOSPHERE ; JETS ; INTRANETWORK ; INSTABILITY ; EMISSION
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9848
Collection太阳物理研究组
Corresponding AuthorNi L(倪蕾)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
3.Division of Geosciences, National Science Foundation Arlington, Virginia, USA
4.Observatoire de Paris, LESIA, Meudon, France
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Ni L,Lin J,Ilia I. Roussev,et al. HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS[J]. ASTROPHYSICAL JOURNAL,2016,832(2).
APA Ni L,Lin J,Ilia I. Roussev,&Brigitte Schmieder.(2016).HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS.ASTROPHYSICAL JOURNAL,832(2).
MLA Ni L,et al."HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS".ASTROPHYSICAL JOURNAL 832.2(2016).
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