The Inertia-Based Model for Reconstruction of the Electron Diffusion Region
Creators
- 1. Space Research Institute, Austrian Academy of Sciences, Graz, Austria
- 2. Institute of Physics, Karl-Franz University, Graz, Austria
- 3. The Earth Physics Department, Saint Petersburg State University, St. Petersburg, Russia
- 4. Institute of Computational Modelling, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia
- 5. The Applied Mechanics Department, Siberian Federal University, Krasnoyarsk, Russia
Description
The present study is focused on the problem of reconstruction of the magnetic
configuration in the magnetic reconnection electron diffusion region (EDR). The problem is addressed
in the frame of electron magnetohydrodynamics with kept electron inertia term. We introduce the
new reconstruction model independent of divergence of the electron pressure tensor and reconnection
electric field. The model is tested on the magnetotail reconnection event of July 11, 2017 observed by
the Magnetospheric Multiscale (MMS) spacecraft in the course of crossing the very core part of the
reconnection region, the internal EDR. This new model demonstrates considerably better accuracy of the
longitudinal electron velocity reconstruction due to the lower sensitivity to the configuration deviation
from the two-dimensional time-independent model adopted in our study. We suggest also a new technique
to estimate the guide field, implementing the reconstruction of magnetic potential of the in-plane
magnetic field and relying on symmetric properties of magnetic reconnection.
Files
korovinskiy_d_2021_jgr_126_e2020ja029045.pdf
Files
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