Observation of Nongyrotropic Electron Distribution Across the Electron Diffusion Region in the Magnetotail Reconnection

2019 ◽  
Vol 46 (24) ◽  
pp. 14263-14273 ◽  
Author(s):  
Xinmin Li ◽  
Rongsheng Wang ◽  
Quanming Lu ◽  
Kyoung‐Joo Hwang ◽  
Qiugang Zong ◽  
...  
Keyword(s):  
Electron Distribution ◽  
Diffusion Region ◽  
Electron Diffusion ◽  
Magnetotail Reconnection

Observation of non-gyrotropic electron distribution across the electron diffusion region in the magnetotail reconnection

2020 ◽  
Author(s):  
Xinmin Li ◽  
Quanming Lu
Keyword(s):  
Electric Field ◽  
Energy Range ◽  
Electron Distribution ◽  
Distribution Functions ◽  
Diffusion Region ◽  
Electron Diffusion ◽  
Vertical Distance ◽  
Magnetospheric Multiscale ◽  
Magnetotail Reconnection ◽  
First Time

<p>Using measurements by the Magnetospheric Multiscale (MMS) spacecraft in the magnetotail, we studied electron distribution functions across an electron diffusion region. The dependence of the non-gyrotropic distribution on the energy and vertical distance from the EDR mid-plane was revealed for the first time. The non-gyrotropic distribution was observed everywhere except for an extremely narrow layer right at the EDR mid-plane. The energy of the non-gyrotropic distribution increased with growth of the vertical distance from the mid-plane. For the electrons within certain energy range, they exhibited the non-gyrotropic distribution at the distance further away from the mid-plane than that expected from the meandering motion. The correlation between the crescent-shaped distribution with multiple stripes and the large Hall electric field was established. It appears that the measured non-gyrotropic distribution and the crescent-shaped distribution were caused by the meandering motion and the Hall electric field together.</p>

MMS Observations of Broadband Electrostatic Waves in Electron Diffusion Region of Magnetotail Reconnection

2021 ◽  
Vol 126 (3) ◽  
Author(s):  
Xiancai Yu ◽  
Quanming Lu ◽  
Rongsheng Wang ◽  
Kai Huang ◽  
Xinliang Gao ◽  
...  
Keyword(s):  
Diffusion Region ◽  
Electron Diffusion ◽  
Electrostatic Waves ◽  
Magnetotail Reconnection

Nonideal Electric Field Observed in the Separatrix Region of a Magnetotail Reconnection Event

2020 ◽  
Author(s):  
Xiancai Yu ◽  
Rongsheng Wang ◽  
Quanming Lu
Keyword(s):  
Energy Dissipation ◽  
Electric Field ◽  
Current Sheet ◽  
Thermal Energy ◽  
Electrostatic Potential ◽  
Electron Distribution ◽  
Diffusion Region ◽  
Pressure Tensor ◽  
Magnetospheric Multiscale ◽  
Magnetotail Reconnection

<p>The microphysics in the separatrix region (SR) plays an important role for the energy conversion in reconnection. Based on the Magnetospheric Multiscale observations in the magnetotail, we present a complete crossing of the current sheet with ongoing magnetic reconnection. The field‐aligned inflowing electrons were observed in both separatrix regions (SRs) and their energy extended up to several times of the thermal energy. Along the SR, a net parallel electrostatic potential was estimated and could be the reason for the inflowing electron streaming. In the northern SR, the electron frozen‐in condition was violated and nonideal electric field was inferred to be caused by the gradient of the electron pressure tensor. The nongyrotropic electron distribution and significant energy dissipation were observed at the same region. The observations indicate that the inner electron diffusion region can extend along the separatrices or some electron‐scale instability can be destabilized in the SR. </p>

scholarly journals The Role of Upper Hybrid Waves in the Magnetotail Reconnection Electron Diffusion Region

2019 ◽  
Vol 881 (2) ◽  
pp. L28 ◽  
Author(s):  
K. Jiang ◽  
S. Y. Huang ◽  
Z. G. Yuan ◽  
F. Sahraoui ◽  
X. H. Deng ◽  
...  
Keyword(s):  
Diffusion Region ◽  
Electron Diffusion ◽  
Magnetotail Reconnection ◽  
Hybrid Waves

Reconstruction of the Electron Diffusion Region of Magnetotail Reconnection Seen by the MMS Spacecraft on 11 July 2017

2019 ◽  
Vol 124 (1) ◽  
pp. 122-138 ◽  
Author(s):  
H. Hasegawa ◽  
R. E. Denton ◽  
R. Nakamura ◽  
K. J. Genestreti ◽  
T. K. M. Nakamura ◽  
...  
Keyword(s):  
Diffusion Region ◽  
Electron Diffusion ◽  
Magnetotail Reconnection

scholarly journals Identification of the Electron-Diffusion Region during Magnetic Reconnection in a Laboratory Plasma

2008 ◽  
Vol 101 (8) ◽  
Author(s):  
Yang Ren ◽  
Masaaki Yamada ◽  
Hantao Ji ◽  
Stefan P. Gerhardt ◽  
Russell Kulsrud
Keyword(s):  
Magnetic Reconnection ◽  
Diffusion Region ◽  
Laboratory Plasma ◽  
Electron Diffusion
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