Articles | Volume 22, issue 2
https://doi.org/10.5194/npg-22-167-2015
https://doi.org/10.5194/npg-22-167-2015
Brief communication
 | 
16 Mar 2015
Brief communication |  | 16 Mar 2015

Brief Communication: The double layer in the separatrix region during magnetic reconnection

J. Guo and B. Yu

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Subject: Nonlinear Waves, Pattern Formation, Turbulence | Topic: Ionosphere, magnetosphere, planetary science, solar science
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Cited articles

Boström, R.: Obdervations of weak double-layers on auroral field lines, IEEE Trans. Plasma Sci., 20, 756–763, 1992.
Deng, X. H. and Matsumoto, H.: Rapid magnetic reconnection in the Earth's magnetosphere mediated by whistler waves, Nature, 410, 557–560, 2001.
Drake, J. F., Swisdak, M., Cattell, C., Shay, M. A., Rogers, B. N., and Zeiler, A.: Formation of electron holes and particle energization during magnetic reconnection, Science, 299, 873–877, 2003.
Ergun, R. E., Su, Y. -J., Andersson, L., Carlson, C. W., McFadden, J. P., Mozer, F. S., Newman, D. L., and Goldman, M. V.: Direct observation of localized parallel electric fields in a space plasma, Phys. Rev. Lett., 87, 045003, https://doi.org/10.1103/PhysRevLett.87.045003, 2001.
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Short summary
The key finding is that an electron beam can be generated in the separatrix region as magnetic reconnection proceeds. This electron beam could trigger the ion-acoustic instability, and a double layer accompanied with electron holes can be found during the nonlinear evolution stage of this instability.