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Title: MAGNETOHYDRODYNAMIC SIMULATION OF THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15. II. DYNAMICS CONNECTING THE SOLAR FLARE AND THE CORONAL MASS EJECTION

Abstract

We clarify a relationship between the dynamics of a solar flare and a growing coronal mass ejection (CME) by investigating the dynamics of magnetic fields during the X2.2-class flare taking place in the solar active region 11158 on 2011 February 15, based on simulation results obtained from Inoue et al. We found that the strongly twisted lines formed through tether-cutting reconnection in the twisted lines of a nonlinear force-free field can break the force balance within the magnetic field, resulting in their launch from the solar surface. We further discover that a large-scale flux tube is formed during the eruption as a result of the tether-cutting reconnection between the eruptive strongly twisted lines and these ambient weakly twisted lines. The newly formed large flux tube exceeds the critical height of the torus instability. Tether-cutting reconnection thus plays an important role in the triggering of a CME. Furthermore, we found that the tangential fields at the solar surface illustrate different phases in the formation of the flux tube and its ascending phase over the threshold of the torus instability. We will discuss these dynamics in detail.

Authors:
; ;  [1];  [2];  [3]
  1. School of Space Research, Kyung Hee University, Yongin 446-701 (Korea, Republic of)
  2. Key Laboratory of Solar Activity, National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing, 100012 (China)
  3. Korean Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22521982
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 803; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPUTERIZED SIMULATION; ERUPTION; INSTABILITY; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; MASS; NONLINEAR PROBLEMS; SOLAR CORONA; SOLAR FLARES; SUN; SURFACES

Citation Formats

Inoue, S., Magara, T., Choe, G. S., Hayashi, K., and Park, Y. D., E-mail: inosato@khu.ac.kr. MAGNETOHYDRODYNAMIC SIMULATION OF THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15. II. DYNAMICS CONNECTING THE SOLAR FLARE AND THE CORONAL MASS EJECTION. United States: N. p., 2015. Web. doi:10.1088/0004-637X/803/2/73.
Inoue, S., Magara, T., Choe, G. S., Hayashi, K., & Park, Y. D., E-mail: inosato@khu.ac.kr. MAGNETOHYDRODYNAMIC SIMULATION OF THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15. II. DYNAMICS CONNECTING THE SOLAR FLARE AND THE CORONAL MASS EJECTION. United States. doi:10.1088/0004-637X/803/2/73.
Inoue, S., Magara, T., Choe, G. S., Hayashi, K., and Park, Y. D., E-mail: inosato@khu.ac.kr. Mon . "MAGNETOHYDRODYNAMIC SIMULATION OF THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15. II. DYNAMICS CONNECTING THE SOLAR FLARE AND THE CORONAL MASS EJECTION". United States. doi:10.1088/0004-637X/803/2/73.
@article{osti_22521982,
title = {MAGNETOHYDRODYNAMIC SIMULATION OF THE X2.2 SOLAR FLARE ON 2011 FEBRUARY 15. II. DYNAMICS CONNECTING THE SOLAR FLARE AND THE CORONAL MASS EJECTION},
author = {Inoue, S. and Magara, T. and Choe, G. S. and Hayashi, K. and Park, Y. D., E-mail: inosato@khu.ac.kr},
abstractNote = {We clarify a relationship between the dynamics of a solar flare and a growing coronal mass ejection (CME) by investigating the dynamics of magnetic fields during the X2.2-class flare taking place in the solar active region 11158 on 2011 February 15, based on simulation results obtained from Inoue et al. We found that the strongly twisted lines formed through tether-cutting reconnection in the twisted lines of a nonlinear force-free field can break the force balance within the magnetic field, resulting in their launch from the solar surface. We further discover that a large-scale flux tube is formed during the eruption as a result of the tether-cutting reconnection between the eruptive strongly twisted lines and these ambient weakly twisted lines. The newly formed large flux tube exceeds the critical height of the torus instability. Tether-cutting reconnection thus plays an important role in the triggering of a CME. Furthermore, we found that the tangential fields at the solar surface illustrate different phases in the formation of the flux tube and its ascending phase over the threshold of the torus instability. We will discuss these dynamics in detail.},
doi = {10.1088/0004-637X/803/2/73},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 803,
place = {United States},
year = {2015},
month = {4}
}