| タイトル | On the Electron Diffusion Region in Asymmetric Reconnection with a Guide Magnetic Field |
| 著者（英） | Bessho, Naoki; Burch, James L.; Kuznetsova, Masha; Chen, Li-Jen; Hesse, Michael; Birn, Joachim; Liu, Yi-Hsin |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2016-03-10 |
| 言語 | eng |
| 内容記述 | Particle-in-cell simulations in a 2.5-D geometry and analytical theory are employed to study the electron diffusion region in asymmetric reconnection with a guide magnetic field. The analysis presented here demonstrates that similar to the case without guide field, in-plane flow stagnation and null of the in-plane magnetic field are well separated. In addition, it is shown that the electric field at the local magnetic X point is again dominated by inertial effects, whereas it remains dominated by nongyrotropic pressure effects at the in-plane flow stagnation point. A comparison between local electron Larmor radii and the magnetic gradient scale lengths predicts that distribution should become nongyrotropic in a region enveloping both field reversal and flow stagnation points. This prediction is verified by an analysis of modeled electron distributions, which show clear evidence of mixing in the critical region. |
| NASA分類 | Physics (General) |
| レポートNO | GSFC-E-DAA-TN31186 |
| 権利 | Copyright |
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