期刊文献+

Testing a solar coronal magnetic field extrapolation code with the Titov–Dmoulin magnetic flux rope model 被引量:2

Testing a solar coronal magnetic field extrapolation code with the Titov–Dmoulin magnetic flux rope model
下载PDF
导出
摘要 In the solar corona, the magnetic flux rope is believed to be a fundamental structure that accounts for magnetic free energy storage and solar eruptions. Up to the present, the extrapolation of the magnetic field from boundary data has been the primary way to obtain fully three-dimensional magnetic information about the corona. As a result, the ability to reliably recover the coronal magnetic flux rope is important for coronal field extrapolation. In this paper, our coronal field extrapolation code is examined with an analytical magnetic flux rope model proposed by Titov & D6moulin, which consists of a bipolar magnetic configuration holding a semi-circular line-tied flux rope in force-free equilibrium. By only using the vector field at the bottom boundary as input, we test our code with the model in a representative range of parameter space and find that the model field can be reconstructed with high accuracy. In particular, the magnetic topological interfaces formed between the flux rope and the surrounding arcade, i.e., the "hyperbolic flux tube" and "bald patch separatrix surface," are also reliably reproduced. By this test, we demonstrate that our CESE-MHD-NLFFF code can be applied to recovering the magnetic flux rope in the solar corona as long as the vector magnetogram satisfies the force-free constraints. In the solar corona, the magnetic flux rope is believed to be a fundamental structure that accounts for magnetic free energy storage and solar eruptions. Up to the present, the extrapolation of the magnetic field from boundary data has been the primary way to obtain fully three-dimensional magnetic information about the corona. As a result, the ability to reliably recover the coronal magnetic flux rope is important for coronal field extrapolation. In this paper, our coronal field extrapolation code is examined with an analytical magnetic flux rope model proposed by Titov & D6moulin, which consists of a bipolar magnetic configuration holding a semi-circular line-tied flux rope in force-free equilibrium. By only using the vector field at the bottom boundary as input, we test our code with the model in a representative range of parameter space and find that the model field can be reconstructed with high accuracy. In particular, the magnetic topological interfaces formed between the flux rope and the surrounding arcade, i.e., the "hyperbolic flux tube" and "bald patch separatrix surface," are also reliably reproduced. By this test, we demonstrate that our CESE-MHD-NLFFF code can be applied to recovering the magnetic flux rope in the solar corona as long as the vector magnetogram satisfies the force-free constraints.
机构地区 SIGMA Weather Group
出处 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2016年第1期129-134,共6页 天文和天体物理学研究(英文版)
基金 supported by the 973 program under grant 2012CB825601 the Chinese Academy of Sciences (KZZD-EW-01-4) the National Natural Science Foundation of China (41204126,41274192,41031066 and 41074122) the Specialized Research Fund for State Key Laboratories supported by the Youth Innovation Promotion Association of CAS (2015122)
关键词 magnetic fields -- magnetohydrodynamics (MHD) -- methods: numerical -- Sun: corona magnetic fields -- magnetohydrodynamics (MHD) -- methods: numerical -- Sun: corona
  • 相关文献

参考文献47

  • 1Canfield, R. C., Hudson, H. S., & McKenzie, D. E. 1999, Geophys. Res. Lett., 26, 627.
  • 2Canou, A., & Amari, T. 2010, ApJ, 715, 1566.
  • 3Chen, E E, & Shibata, K. 2000, ApJ, 545,524.
  • 4Cheng, X., Ding, M. D., Guo, Y., et al. 2010, ApJ, 716, L68.
  • 5Cheng, X., Zhang, J., Ding, M. D., et al. 2013, ApJ, 769, L25.
  • 6Feug, X., Jiang, C., Xiang, C., Zhao, X., & Wu, S. T. 2012a, ApJ, 758, 62.
  • 7Feng, X., Yang, L., Xiang, C., et al. 2012b, Sol. Phys., 279, 207.
  • 8Forbes, T. G., & Isenberg, E A. 1991, ApJ, 373,294.
  • 9Gary, D. E., & Hurford, G. J. 1994, ApJ, 420, 903.
  • 10Gibson, S. E., Fan, Y., T6r6k, T., & Kliem, B. 2006, Space Sci. Rev., 124, 131.

同被引文献19

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部