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      Flare energy release by flux pile-up magnetic reconnection in a turbulent current sheet

      Litvinenko, Yuri E.; Craig, Ian J.D.
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      flare.pdf
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      DOI
       10.1086/317262
      Link
       www.journals.uchicago.edu
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      Citation
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      Litvinenko, Y.E. & Craig, I.J.D. (2000). Flare energy release by flux pile-up magnetic reconnection in a turbulent current sheet. The Astrophysical Journal, 544(2), 1101- 1107.
      Permanent Research Commons link: https://hdl.handle.net/10289/1367
      Abstract
      The power output of flux pile-up magnetic reconnection is known to be determined by the total hydromagnetic pressure outside the current sheet. The maximum energy-release rate is reached for optimized solutions that balance the maximum dynamic and magnetic pressures. An optimized solution is determined in this paper for a current sheet with anomalous, turbulent electric resistivity. The resulting energy dissipation rate Wa is a strong function of the maximum, saturated magnetic field Bs: . Numerically, Wa can exceed the power output based on the classical resistivity by more than 2 orders of magnitude for three-dimensional pile-up, leading to solar flarelike energy-release rates of the order of 1028 ergs s−1. It is also shown that the optimization prescription has its physical basis in relating the flux pile-up solutions to the Sweet-Parker reconnection model.
      Date
      2000-12
      Type
      Journal Article
      Rights
      This article has been published in the Astrophysical Journal. Copyright 2000 The American Astronomical Society.
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      • Computing and Mathematical Sciences Papers [1454]
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