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The inner structure of collisionless magnetic reconnection: The electron-frame dissipation measure and Hall fields
1. J. Birn, J. F. Drake, M. A. Shay, B. N. Rogers, R. E. Denton, M. Hesse, M. Kuznetsova, Z. W. Ma, A. Bhattacharjee, A. Otto, and P. L. Pritchett, J. Geophys. Res. 106, 3715, doi: (2001).
3. J. F. Drake and M. A. Shay, in Reconnection of Magnetic Fields: Magnetohydrodynamics and Collisionless Theory and Observations, edited by J. Birn and E. R. Priest (Cambridge University, Cambridge, 2007), Sec. 3.1.
22. B. U. Ö. Sonnerup, “Magnetic field reconnection,” in Solar System Plasma Physics, edited by L. J. Lanzerotti, C. F. Kennel, and E. N. Parker (North Holland, New York, 1979),Vol. 3, p. 45.
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It was recently proposed that the electron-frame dissipation measure, the energy transfer from the electromagnetic field to plasmas in the electron’s rest frame, identifies the dissipation region of collisionless magnetic reconnection [Zenitani et al., Phys. Rev. Lett. 106, 195003 (2011)]. The measure is further applied to the electron-scale structures of antiparallel reconnection, by using two-dimensional particle-in-cell simulations. The size of the central dissipation region is controlled by the electron-ion mass ratio, suggesting that electron physics is essential. A narrow electron jet extends along the outflow direction until it reaches an electron shock. The jet region appears to be anti-dissipative. At the shock, electron heating is relevant to a magnetic cavity signature. The results are summarized to a unified picture of the single dissipation region in a Hall magnetic geometry.
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