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Properties of Lower Hybrid Drift Waves and Energy Transfer Near and Inside the Electron Diffusion Regions
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  • Narges Ahmadi,
  • Hantao Ji,
  • Jongsoo Yoo,
  • Robert E Ergun,
  • Izzy Thomas,
  • Rahul Banka,
  • Emma Schultz-Stachnik,
  • Alma Alex
Narges Ahmadi
Laboratory for Atmospheric and Space Physics, University of Colorado Boulder

Corresponding Author:[email protected]

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Hantao Ji
PPPL
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Jongsoo Yoo
Princeton Plasma Physics Laboratory (DOE)
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Robert E Ergun
Univeristy of Colorado
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Izzy Thomas
University of California San Diego
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Rahul Banka
Auburn University
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Emma Schultz-Stachnik
University of Wisconsin-Parkside
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Alma Alex
Yale University
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Abstract

We investigate properties of lower hybrid drift waves (LHDWs) near and inside the electron diffusion regions in 17 magnetopause and 9 magnetotail reconnection events using Magnetospheric MultiScale (MMS) mission observations. Our analysis show that LHDW type depend on the electron beta, as electron beta increases LHDWs become more electromagnetic in nature. The energy transfer from electromagnetic fields to particles is higher in electrostatic LHDWs and it is largely in parallel direction. Linear dispersion analysis shows that electrostatic LHDWs are perpendicular propagating while electromagnetic waves propagate in oblique directions and the normalized wavenumber of all LHDW types falls within 0.5 to 0.8 range. A simple estimate on the LHDW nonlinear saturation suggests possibly important roles played by these waves in supporting reconnection electric field.
31 Aug 2024Submitted to ESS Open Archive
02 Sep 2024Published in ESS Open Archive