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Lower hybrid drift waves during guide field reconnection

Journal Article · · Earth and Space Science Open Archive (ESSOAr)
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [5];  [1];  [8];  [1];  [6];  [9];  [9]
  1. Princeton Plasma Physics Laboratory (DOE)
  2. Utah State University
  3. University of Rochester
  4. University of Maryland, College Park
  5. PPPL
  6. Princeton University
  7. Department of Physics, Harbin Institute of Technology
  8. NASA Goddard Space Flight Center
  9. Princeton Plasma Physics Laboratory
+ Show Author Affiliations

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.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE
Contributing Organization:
NASA grants NNH14AX63I243 and NNH15AB29I, NSF grants AGS-1552142, AGS-1619584, DOE grant DESC0016278, 244 NSF-DOE partnership in plasma science grant DE-FG02-00ER54585, and the NASA MMS 245 mission. All MMS data used are available at https://lasp.colorado.edu/mms/sdc/public/.
DOE Contract Number:
AC02-09CH11466
OSTI ID:
1667386
Journal Information:
Earth and Space Science Open Archive (ESSOAr), Journal Name: Earth and Space Science Open Archive (ESSOAr); ISSN 9999-0055
Publisher:
American Geophysical Union (AGU)
Country of Publication:
United States
Language:
English

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