首站-论文投稿智能助手
典型文献
The Precursor Phase of an X-class Flare:Magnetic Reconnection,Powering and Non-thermal Electrons
文献摘要:
In this paper,we report three interesting phenomena that occurred during the precursor phase of the X1.6 class flare on 2014 September 10.(1)The magnetic reconnection initiating the flare occurs between one of the two J-shaped magnetic flux ropes that constitute a sigmoidal structure and the overlying sheared magnetic arcade that runs across the sigmoid over its middle part.The reconnection formed an erupting structure that ultimately leads to flare onset.Another J-shaped magnetic flux rope remains unaffected during the whole eruption.The phenomenon is revealed by the observation made by the Atmospheric Imaging Assembly on board the Solar Dynamic Observatory(SDO)at 94 and 131?.(2)Being simultaneously with starting time of the precursor,photospheric vertical electric current(VEC)around the footpoint region of the overlying magnetic arcade underwent an obvious increase,as observed by the Helioseismic and Magnetic Imager(HMI)on board SDO.By only taking into account the VEC with current density over 3σvalue(lσ:10 mA m 2),we are able to pick out precursor-associated VEC increase starting from nearly the level of zero.We regard it as a kind of powering process for the magnetic reconnection between the two magnetic loops.(3)With high-resolution narrow-band Helium 10830 A images taken by Goode Solar Telescope at Big Bear Solar Observatory(BBSO),we observe a narrow absorption(dark)front that runs along the erupting magnetic structure(or the erupting hot channel)and moves in the direction of the eruption during the precursor phase.Assuming the excitation mechanism of Helium atoms along the absorption front by non-thermal electrons,the phenomenon shows that the interaction between the erupted hot channel and the overlying(or surrounding)magnetic field has yielded electron acceleration.
文献关键词:
作者姓名:
Jinhua Shen;Haisheng Ji;Yingna Su
作者机构:
Xinjiang Astronomical Observatory,Chinese Academy of Sciences,150 Science 1-Street,Urumqi,Xinjiang 830011,China;Key Laboratory for Dark Matter and Space Science,Purple Mountain Observatory,CAS,Nanjing,210023,China;Purple Mountain Observatory,CAS,Nanjing,210023,China
引用格式:
[1]Jinhua Shen;Haisheng Ji;Yingna Su-.The Precursor Phase of an X-class Flare:Magnetic Reconnection,Powering and Non-thermal Electrons)[J].天文和天体物理学研究,2022(01):205-214
A类:
arcade,erupting,photospheric,footpoint,Goode,BBSO
B类:
Precursor,Phase,class,Flare,Magnetic,Reconnection,Powering,Non,thermal,Electrons,In,this,paper,report,three,interesting,phenomena,that,occurred,during,precursor,phase,X1,flare,September,magnetic,reconnection,initiating,occurs,between,one,two,shaped,flux,ropes,constitute,sigmoidal,structure,overlying,sheared,runs,across,its,middle,part,formed,ultimately,leads,onset,Another,remains,unaffected,whole,eruption,phenomenon,revealed,by,observation,made,Atmospheric,Imaging,Assembly,board,Solar,Dynamic,Observatory,SDO,Being,simultaneously,starting,vertical,electric,current,VEC,around,region,underwent,obvious,increase,observed,Helioseismic,Imager,HMI,By,only,taking,into,account,density,value,mA,able,pick,out,associated,from,nearly,level,zero,We,regard,kind,powering,process,loops,With,high,resolution,narrow,band,Helium,images,taken,Telescope,Big,Bear,absorption,dark,front,along,channel,moves,direction,Assuming,excitation,mechanism,atoms,electrons,shows,interaction,erupted,surrounding,field,yielded,acceleration
AB值:
0.539015
相似文献
Evidence for Magnetic Fractional Excitations in a Kitaev Quantum-Spin-Liquid Candidate α-RuCl3
Kejing Ran;Jinghui Wang;Song Bao;Zhengwei Cai;Yanyan Shangguan;Zhen Ma;Wei Wang;Zhao-Yang Dong;P.(C)ermák;A.Schneidewind;Siqin Meng;Zhilun Lu;Shun-Li Yu;Jian-Xin Li;Jinsheng Wen-School of Physical Science and Technology,and ShanghaiTech Laboratory for Topological Physics,ShanghaiTech University,Shanghai 200031,China;National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing 210093,China;Institute for Advanced Materials,Hubei Normal University,Huangshi 435002,China;School of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Department of Applied Physics,Nanjing University of Science and Technology,Nanjing 210094,China;Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ),Forschungszentrum Jülich GmbH,Lichtenbergstr.1,85748 Garching,Germany;Charles University,Faculty of Mathematics and Physics,Department of Condensed Matter Physics,Ke Karlovu 5,12116,Praha,Czech Republic;Helmholtz-Zentrum Berlin für Materialien und Energie GmbH,Hahn-Meitner-Platz 1D-14109,Berlin,Germany;China Institute of Atomic Energy (CIAE),Beijing 102413,China;The Henry Royce Institute and Department of Materials Science and Engineering,The University of Sheffield,Sir Robert Hadfield Building,Sheffield,S13JD,United Kingdom;Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China
Neutron Spectroscopy Evidence for a Possible Magnetic-Field-Induced Gapless Quantum-Spin-Liquid Phase in a Kitaev Material α-RuCl3
Xiaoxue Zhao;Kejing Ran;Jinghui Wang;Song Bao;Yanyan Shangguan;Zhentao Huang;Junbo Liao;Bo Zhang;Shufan Cheng;Hao Xu;Wei Wang;Zhao-Yang Dong;Siqin Meng;Zhilun Lu;Shin-ichiro Yano;Shun-Li Yu;Jian-Xin Li;Jinsheng Wen-National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing 210093,China;School of Physical Science and Technology and ShanghaiTech Laboratory for Topological Physics,ShanghaiTech University,Shanghai 200031,China;School of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Department of Applied Physics,Nanjing University of Science and Technology,Nanjing 210094,China;Helmholtz-Zentrum Berlin für Materialien und Energie GmbH,Hahn-Meitner-Platz 1D-14109 Berlin,Germany;China Institute of Atomic Energy,Beijing 102413,China;School of Engineering and the Built Environment,Edinburgh Napier University,Edinburgh EH10 5DT,United Kingdom;National Synchrotron Radiation Research Center,Hsinchu 30077,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China
Phase Diagram of the BCS-Hubbard Model in a Magnetic Field
Dong-Hong Xu;Yi-Cong Yu;Xing-Jie Han;Xi Chen;Kang Wang;Ming-Pu Qin;Hai-Jun Liao;Tao Xiang-Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Wuhan Institute of Physics and Mathematics,IAPMST,Chinese Academy of Sciences,Wuhan 430071,China;School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China;Key Laboratory of Artificial Structures and Quantum Control,School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Songshan Lake Materials Laboratory,Dongguan 523808,China;Beijing Academy of Quantum Information Sciences,Beijing 100193,China
Enhanced Anomalous Hall Effect of Pt on an Antiferromagnetic Insulator with Fully Compensated Surface
Yu Bai;Zhe Wang;Na Lei;Wisal Muhammad;Lifeng Xiang;Qiang Li;Huilin Lai;Yinyan Zhu;Wenbing Wang;Hangwen Guo;Lifeng Yin;Ruqian Wu;Jian Shen-State Key Laboratory of Surface Physics and Institute for Nanoelectronics Devices and Quantum Computing,Fudan University,Shanghai 200433,China;Department of Physics,Fudan University,Shanghai 200433,China;Fert Beijing Institute,BDBC,School of Electronic and Information Engineering,Beihang University,Beijing 100191,China;Shanghai Qi Zhi Institute,Shanghai 200232,China;Zhangjiang Fudan International Innovation Center,Fudan University,Shanghai 201210,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing 210093,China;Department of Physics and Astronomy,University of California,Irvine,California 92697,USA
Ground-Based Hyperspectral Stereoscopic Remote Sensing Network:A Promising Strategy to Learn Coordinated Control of O3 and PM2.5 over China
Cheng Liu;Chengzhi Xing;Qihou Hu;Qihua Li;Haoran Liu;Qianqian Hong;Wei Tan;Xiangguang Ji;Hua Lin;Chuan Lu;Jinan Lin;Hanyang Liu;Shaocong Wei;Jian Chen;Kunpeng Yang;Shuntian Wang;Ting Liu;Yujia Chen-Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230026,China;Centerfor Excellence in Regional Atmospheric Environment,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China;Key Lab of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes,University of Science and Technology of China,Hefei 230026,China;Anhui Province Key Laboratory of Polar Environment and Global Change,University of Science and Technology of China,Hefei 230026,China;Institute of Physical Science and Information Technology,Anhui University,Hefei 230601,China;School of Environment and Civil Engineering,Jiangnan University,Wuxi 214122,China;School of Environmental Science and Optoelectronic Technology,University of Science and Technology of China,Hefei 230026,China;School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China
机标中图分类号,由域田数据科技根据网络公开资料自动分析生成,仅供学习研究参考。