Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer
| dc.contributor.author | Ng, Jonathan | |
| dc.contributor.author | Chen, L.-J. | |
| dc.contributor.author | Le, A. | |
| dc.contributor.author | Stanier, A. | |
| dc.contributor.author | Wang, S. | |
| dc.contributor.author | Bessho, N. | |
| dc.date.accessioned | 2021-07-28T13:35:40Z | |
| dc.date.available | 2021-07-28T13:35:40Z | |
| dc.date.issued | 2020-11-10 | |
| dc.description.abstract | Abstract Lower-hybrid-drift waves driving vortical flows have recently been discovered in the electron current layer during magnetic reconnection in the terrestrial magnetotail. Yet, spacecraft measurements cannot address how pervasive the waves are. We perform three-dimensional particle-in-cell simulations of guide field reconnection to demonstrate that electron vortices driven by the lower-hybrid-drift instability (LHDI) are excited immediately downstream from the electron jet reversal in 3-D channels of enhanced electron outflow. The resulting fluctuations generate a series of alternating vortices, producing magnetic field perturbations opposing and enhancing the local guide field and causing kinking of the enhanced electron outflow and patches of increased current. Our results demonstrate for the first time that LHDI exists in the electron current layer and enhanced outflow channels, providing a conceptual breakthrough on the LHDI in reconnection. Plain Language Summary Lower-hybrid-drift waves have been discovered in the electron-scale reconnection layer by the Magnetospheric Multiscale (MMS) mission in the Earth's magnetotail. These waves drive vortical electron flows and modify the magnetic field along the reconnection current. We perform fully kinetic simulations which demonstrate how these waves can be generated and their effects on the electron dynamics and magnetic fields in the reconnection region. | en_US |
| dc.description.sponsorship | This work was supported by DOE Grant DESC0016278, NSF Grant AGS-1619584, NASA Grant 80NSSC18K1369. A. L. was supported by NASA grant NNH17AE36I. Simulations were performed using NASA HECC resources. | en_US |
| dc.description.uri | https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020GL090726 | en_US |
| dc.format.extent | 8 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2c4re-gbi8 | |
| dc.identifier.citation | Ng, Jonathan et al.; Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer; Geophysical Research Letters, 47, 22, 10 November, 2020; https://doi.org/10.1029/2020GL090726 | en_US |
| dc.identifier.uri | https://doi.org/10.1029/2020GL090726 | |
| dc.identifier.uri | http://hdl.handle.net/11603/22192 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | American Geophysical Union | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Goddard Planetary Heliophysics Institute (GPHI) | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer | en_US |
| dc.type | Text | en_US |