loading page

Lower hybrid drift waves during guide field reconnection
  • +11
  • Jongsoo Yoo,
  • Jeong-Young Ji,
  • Manfred V. Ambat,
  • Shan Wang,
  • Hantao Ji,
  • Jenson Lo,
  • Bowen Li,
  • Yang Ren,
  • Jonathan Jara-almonte,
  • Li-Jen Chen,
  • William Fox,
  • Masaaki Yamada,
  • Andrew Alt,
  • Aaron Goodman
Jongsoo Yoo
Princeton Plasma Physics Laboratory (DOE)

Corresponding Author:[email protected]

Author Profile
Jeong-Young Ji
Utah State University
Author Profile
Manfred V. Ambat
University of Rochester
Author Profile
Shan Wang
University of Maryland, College Park
Author Profile
Hantao Ji
PPPL
Author Profile
Jenson Lo
Princeton University
Author Profile
Bowen Li
Department of Physics, Harbin Institute of Technology
Author Profile
Yang Ren
PPPL
Author Profile
Jonathan Jara-almonte
Princeton Plasma Physics Laboratory (DOE)
Author Profile
Li-Jen Chen
NASA Goddard Space Flight Center
Author Profile
William Fox
Princeton Plasma Physics Laboratory (DOE)
Author Profile
Masaaki Yamada
Princeton University
Author Profile
Andrew Alt
Princeton Plasma Physics Laboratory
Author Profile
Aaron Goodman
Princeton Plasma Physics Laboratory
Author Profile

Abstract

Generation and propagation of lower hybrid drift wave (LHDW) within and near the electron diffusion region (EDR) during guide field reconnection at the magnetopause is studied with data from the Magnetospheric Multiscale mission and a theoretical model. Inside the EDR where the electron beta is high (β ~ 5), the long-wavelength electromagnetic LHDW propagating obliquely to the local magnetic field is observed. In contrast, the short-wavelength electrostatic LHDW propagating nearly perpendicular to the local magnetic field is observed slightly away from the EDR, where β is small (~0.6). These observed LHDW features are explained by a local theoretical model only after including effects from the electron temperature anisotropy, finite electron heat flux and parallel current. The short-wavelength LHDW is capable of generating significant drag force between electrons and ions.
16 Nov 2020Published in Geophysical Research Letters volume 47 issue 21. 10.1029/2020GL087192