HEATING MECHANISMS IN THE LOW SOLAR ATMOSPHERE THROUGH MAGNETIC RECONNECTION IN CURRENT SHEETS
文献类型：期刊论文
| 作者 | Ni, Lei2,4; Lin, Jun4; Roussev, Ilia I.1; Schmieder, Brigitte3 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 832期号:2页码:11 |
| ISSN号 | 0004-637X |
| 关键词 | magnetic reconnection magnetohydrodynamics (MHD) shock waves Sun: chromosphere |
| DOI | 10.3847/0004-637X/832/2/195 |
| 英文摘要 | 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. |
| WOS关键词 | FLUX EMERGENCE IMPLICATIONS ; WHITE-LIGHT FLARES ; ELLERMAN BOMBS ; NUMERICAL SIMULATIONS ; FINE-STRUCTURES ; CHROMOSPHERE ; JETS ; INTRANETWORK ; INSTABILITY ; EMISSION |
| 资助项目 | ISSI ; 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] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000390490100055 |
| 资助机构 | 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 ; 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 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/28971]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Ni, Lei |
| 作者单位 | 1.NSF, Div Geosci, Arlington, VA USA 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 3.LESIA, Observ Paris, Meudon, France 4.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：国家天文台
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