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COMMENTS ON MAGNETIC RECONNECTION MODELS OF CANCELING MAGNETIC FEATURES ON THE SUN

  • Litvinenko, Yuri E.
  • Received : 2015.02.06
  • Published : 2015.06.30

Abstract

Data analysis and theoretical arguments support magnetic reconnection in a chromospheric current sheet as the mechanism of the observed photospheric magnetic flux cancellation on the Sun. Flux pile-up reconnection in a Sweet–Parker current sheet can explain the observed properties of canceling magnetic features, including the speeds of canceling magnetic fragments, the magnetic fluxes in the fragments, and the flux cancellation rates, inferred from the data. It is discussed how more realistic chromospheric reconnection models can be developed by relaxing the assumptions of a negligible current sheet curvature and a constant height of the reconnection site above the photosphere.

Keywords

magnetic reconnection;Sun: chromosphere;Sun: magnetic fields;Sun: photosphere

References

  1. Martin, S. F., Livi, S. H. B., & Wang, J. 1985, The Cancellation of Magnetic Flux. I. In a Decaying Active Region, Australian J. Phys., 38, 929 https://doi.org/10.1071/PH850929
  2. Yang, H., Chae, J., Lim, E.-K., Lee, K.-S., Park, H., Song, D.-U., & Cho, K. 2014, Magnetic-Reconnection Generated Shock Waves as a Driver of Solar Surges, ApJL, 790, L4 https://doi.org/10.1088/2041-8205/790/1/L4
  3. Zeng, Z., Cao, W., & Ji, H. 2013, Observation of Magnetic Reconnection Driven by Granular Scale Advection, ApJL, 790, L4
  4. Livi, S. H. B., Wang, J., & Martin, S. F. 1985, The Cancellation of Magnetic Flux. II. On the Quiet Sun, Australian J. Phys., 38, 855 https://doi.org/10.1071/PH850855
  5. Martens, P. C., & Zwaan, C. 2001, Origin and Evolution of Filament–Prominence Systems, ApJ, 558, 872 https://doi.org/10.1086/322279
  6. Martin, S. F. 1990, Small-Scale Magnetic Features Observed in the Photosphere, in IAU Symposium 138, Solar Photosphere: Structure, Convection, and Magnetic Fields, ed. J. O. Stenflo (Dordrecht: Kluwer), 129
  7. Martin, S. F., Panasenco, O., Engvold, O., & Lin, Y. 2008, The Link Between CMEs, Filaments and Filament Channels, Annales Geophysicae, 26, 3061 https://doi.org/10.5194/angeo-26-3061-2008
  8. Panasenco, O., Martin, S. F., & Velli, M. 2014, Apparent Solar Tornado-Like Prominences, Solar Physics, 289, 603 https://doi.org/10.1007/s11207-013-0337-1
  9. Park, S., & Chae, J. 2012, Ca II Transient Brightenings Associated with Canceling Magnetic Features, Solar Physics, 280, 103 https://doi.org/10.1007/s11207-012-0058-x
  10. Park, S., Chae, J., & Litvinenko, Y. E. 2009, Rates of Photospheric Magnetic Flux Cancellation Measured with Hinode, ApJL, 704, L71 https://doi.org/10.1088/0004-637X/704/1/L71
  11. Parker, E. N. 1982, Compression of Magnetic Field in a Viscous Boundary Layer, Solar Physics, 77, 3 https://doi.org/10.1007/BF00156091
  12. Priest, E. R., Parnell, C. E., & Martin, S. F. 1994, A Converging Flux Model of an X-ray Bright Point and an Associated Canceling Magnetic Feature, ApJ, 427, 459 https://doi.org/10.1086/174157
  13. Tur, T. J., & Priest, E. R. 1976, The Formation of Current Sheets During the Emergence of New Magnetic Flux from Below the Photosphere, Solar Physics, 48, 89 https://doi.org/10.1007/BF00153334
  14. Craig, I. J. D., & Henton, S. M. 1995, Exact Solutions for Steady State Incompressible Magnetic Reconnection, ApJ, 450, 280 https://doi.org/10.1086/176139
  15. Boyd, T. J. M., & Sanderson, J. J. 1969, Plasma Dynamics (New York: Barnes & Noble)
  16. Chae, J. 2012, Magnetic Reconnection in the Photosphere and Chromosphere, in 4th Hinode Science Meeting: Unsolved Problems and Recent Insights, ASP Conference Series, 455, ed. L. R. Bellot Rubio, F. Reale, & M. Carlsson (San Francisco, CA: ASP), 187
  17. Chae, J., Moon, Y.-J., Wang, H., & Yun, H. S. 2002, Flux Cancellation Rates and Converging Speeds of Canceling Magnetic Features, Solar Physics, 207, 73 https://doi.org/10.1023/A:1015534219066
  18. Galloway, D. J., Proctor, M. R. E., & Weiss, N. O. 1977, Formation of Intense Magnetic Fields Near the Surface of the Sun, Nature, 266, 686 https://doi.org/10.1038/266686a0
  19. Galloway, D. J., Proctor, M. R. E., & Weiss, N. O. 1978, Magnetic Flux Ropes and Convection, J. Fluid Mechanics, 87, 243 https://doi.org/10.1017/S0022112078001573
  20. Litvinenko, Y. E. 1999, Photospheric Magnetic Reconnection and Canceling Magnetic Features on the Sun, ApJ, 515, 435 https://doi.org/10.1086/307001
  21. Litvinenko, Y. E. 2013, An Exact Solution for Magnetic Annihilation in a Curved Current Sheet, ApJ, 774, 155 https://doi.org/10.1088/0004-637X/774/2/155
  22. Litvinenko, Y. E., Chae, J., & Park, S.-Y. 2007, Flux Pile-up Magnetic Reconnection in the Solar Photosphere, ApJ, 662, 1302 https://doi.org/10.1086/518115
  23. Litvinenko, Y. E., & Somov, B. V. 1994, On Magnetic Reconnection in the Temperature Minimum Region on the Sun, Astronomy Letters, 20, 185

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