Nakamura, TKM;
Nakamura, R;
Varsani, A;
Genestreti, KJ;
Baumjohann, W;
Liu, Y-H;
(2018)
Remote Sensing of the Reconnection Electric Field From In Situ Multipoint Observations of the Separatrix Boundary.
Geophysical Research Letters
, 45
(9)
pp. 3829-3837.
10.1029/2018GL078340.
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Abstract
A remote sensing technique to infer the local reconnection electric field based on in situ multipoint spacecraft observation at the reconnection separatrix is proposed. In this technique, the increment of the reconnected magnetic flux is estimated by integrating the in‐plane magnetic field during the sequential observation of the separatrix boundary by multipoint measurements. We tested this technique by applying it to virtual observations in a two‐dimensional fully kinetic particle‐in‐cell simulation of magnetic reconnection without a guide field and confirmed that the estimated reconnection electric field indeed agrees well with the exact value computed at the X‐line. We then applied this technique to an event observed by the Magnetospheric Multiscale mission when crossing an energetic plasma sheet boundary layer during an intense substorm. The estimated reconnection electric field for this event is nearly 1 order of magnitude higher than a typical value of magnetotail reconnection.
| Type: | Article |
|---|---|
| Title: | Remote Sensing of the Reconnection Electric Field From In Situ Multipoint Observations of the Separatrix Boundary |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2018GL078340 |
| Publisher version: | https://doi.org/10.1029/2018GL078340 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Physical Sciences, Geosciences, Multidisciplinary, Geology, magnetic reconnection, reconnection rate, PIC simulation, remote sensing, multipoint measurements, MMS, COLLISIONLESS MAGNETIC RECONNECTION, MAGNETOSPHERIC MULTISCALE, DIFFUSION REGION, SIMULATIONS, CHALLENGE, SUBSTORMS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10052575 |
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