YNAO OpenIR  > 太阳物理研究组
Magnetic Reconnection in Strongly Magnetized Regions of the Low Solar Chromosphere
Ni L(倪蕾)1,2; Lukin, Vyacheslav S.3; Murphy, Nicholas A.4
Source PublicationASTROPHYSICAL JOURNAL
2018-01-10
Volume852Issue:2
DOI10.3847/1538-4357/aa9edb
Contribution Rank第1完成单位
Indexed BySCI
KeywordMagnetic Reconnection Magnetohydrodynamics (Mhd) Methods: Numerical Sun: Chromosphere
Abstract

Magnetic reconnection in strongly magnetized regions around the temperature minimum region of the low solar atmosphere is studied by employing MHD-based simulations of a partially ionized plasma within a reactive 2.5D multi-fluid model. It is shown that in the absence of magnetic nulls in a low beta plasma, the ionized and neutral fluid flows are well-coupled throughout the reconnection region. However, non-equilibrium ionization-recombination dynamics play a critical role in determining the structure of the reconnection region, leading to much lower temperature increases and a faster magnetic reconnection rate as compared to simulations that assume plasma to be in ionization-recombination equilibrium. The rate of ionization of the neutral component of the plasma is always faster than recombination within the current sheet region even when the initial plasma beta is as high as beta(0) = 1.46. When the reconnecting magnetic field is in excess of a kilogauss and the plasma beta is lower than 0.0145, the initially weakly ionized plasmas can become fully ionized within the reconnection region and the current sheet can be strongly heated to above 2.5 x 10(4) K, even as most of the collisionally dissipated magnetic energy is radiated away. The Hall effect increases the reconnection rate slightly, but in the absence of magnetic nulls it does not result in significant asymmetries or change the characteristics of the reconnection current sheet down to meter scales.

Funding ProjectNSFC[11573064] ; NSFC[11203069] ; NSFC[11333007] ; NSFC[11303101] ; NSFC[11403100] ; Western Light of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Program 973[2013CBA01503] ; NSFC-CAS[U1631130] ; CAS[QYZDJ-SSW-SLH012] ; 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] ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund[U1501501] ; US National Science Foundation (NSF) ; NSF SHINE[AGS-135842] ; DOE[DE-SC0016363]
Funding OrganizationNSFC[11573064, 11203069, 11333007, 11303101, 11403100] ; Western Light of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Program 973[2013CBA01503] ; NSFC-CAS[U1631130] ; CAS[QYZDJ-SSW-SLH012] ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund[nsfc2015-460, nsfc2015-463, U1501501] ; US National Science Foundation (NSF) ; NSF SHINE[AGS-135842] ; DOE[DE-SC0016363]
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
WOS IDWOS:000422716100002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordWHITE-LIGHT FLARES ; ELLERMAN BOMBS ; AMBIPOLAR DIFFUSION ; 2-FLUID SIMULATIONS ; LOWER ATMOSPHERE ; TRANSITION ; EMISSION ; MODEL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12201
Collection太阳物理研究组
Corresponding AuthorNi L(倪蕾)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650216, P. R. China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, P. R. China
3.National Science Foundation, 2415 Eisenhower Avenue, Alexandria, VA 22314, USA
4.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Ni L,Lukin, Vyacheslav S.,Murphy, Nicholas A.. Magnetic Reconnection in Strongly Magnetized Regions of the Low Solar Chromosphere[J]. ASTROPHYSICAL JOURNAL,2018,852(2).
APA Ni L,Lukin, Vyacheslav S.,&Murphy, Nicholas A..(2018).Magnetic Reconnection in Strongly Magnetized Regions of the Low Solar Chromosphere.ASTROPHYSICAL JOURNAL,852(2).
MLA Ni L,et al."Magnetic Reconnection in Strongly Magnetized Regions of the Low Solar Chromosphere".ASTROPHYSICAL JOURNAL 852.2(2018).
Files in This Item:
File Name/Size DocType Version Access License
Magnetic Reconnectio(2122KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ni L(倪蕾)]'s Articles
[Lukin, Vyacheslav S.]'s Articles
[Murphy, Nicholas A.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ni L(倪蕾)]'s Articles
[Lukin, Vyacheslav S.]'s Articles
[Murphy, Nicholas A.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ni L(倪蕾)]'s Articles
[Lukin, Vyacheslav S.]'s Articles
[Murphy, Nicholas A.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Magnetic Reconnection in Strongly Magnetized Regions of the Low Solar Chromosphere.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.