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HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS
Ni, Lei1,2; Lin, Jun1; Roussev, Ilia I.3; Schmieder, Brigitte4
2016-12-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume832Issue:2Pages:11
AbstractWe 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.
Keywordmagnetic reconnection magnetohydrodynamics (MHD) shock waves Sun: chromosphere
Funding OrganizationISSI ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; ISSI ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; ISSI ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; ISSI ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund
DOI10.3847/0004-637X/832/2/195
WOS KeywordFLUX EMERGENCE IMPLICATIONS ; WHITE-LIGHT FLARES ; ELLERMAN BOMBS ; NUMERICAL SIMULATIONS ; FINE-STRUCTURES ; CHROMOSPHERE ; JETS ; INTRANETWORK ; INSTABILITY ; EMISSION
Language英语
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 ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; ISSI ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; ISSI ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; ISSI ; ISSI ; NSFC ; NSFC ; Western Light of Chinese Academy of Sciences ; Western Light of Chinese Academy of Sciences ; key Laboratory of Solar Activity grant ; key Laboratory of Solar Activity grant ; Program 973 ; Program 973 ; CAS ; CAS ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund ; Special Program for applied Research on Super Computation of the NSFC-Guangdong Joint Fund
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000390490100055
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28972
Collection中国科学院国家天文台
Corresponding AuthorNi, Lei
Affiliation1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
3.NSF, Div Geosci, Arlington, VA USA
4.LESIA, Observ Paris, Meudon, France
Recommended Citation
GB/T 7714
Ni, Lei,Lin, Jun,Roussev, Ilia I.,et al. HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS[J]. ASTROPHYSICAL JOURNAL,2016,832(2):11.
APA Ni, Lei,Lin, Jun,Roussev, Ilia I.,&Schmieder, Brigitte.(2016).HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS.ASTROPHYSICAL JOURNAL,832(2),11.
MLA Ni, Lei,et al."HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS".ASTROPHYSICAL JOURNAL 832.2(2016):11.
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