Geophysical Research Letters (Jun 2016)
Whistler mode waves and Hall fields detected by MMS during a dayside magnetopause crossing
- O. Le Contel,
- A. Retinò,
- H. Breuillard,
- L. Mirioni,
- P. Robert,
- A. Chasapis,
- B. Lavraud,
- T. Chust,
- L. Rezeau,
- F. D. Wilder,
- D. B. Graham,
- M. R. Argall,
- D. J. Gershman,
- P.‐A. Lindqvist,
- Y. V. Khotyaintsev,
- G. Marklund,
- R. E. Ergun,
- K. A. Goodrich,
- J. L. Burch,
- R. B. Torbert,
- J. Needell,
- M. Chutter,
- D. Rau,
- I. Dors,
- C. T. Russell,
- W. Magnes,
- R. J. Strangeway,
- K. R. Bromund,
- H. K. Leinweber,
- F. Plaschke,
- D. Fischer,
- B. J. Anderson,
- G. Le,
- T. E. Moore,
- C. J. Pollock,
- B. L. Giles,
- J. C. Dorelli,
- L. Avanov,
- Y. Saito
Affiliations
- O. Le Contel
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- A. Retinò
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- H. Breuillard
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- L. Mirioni
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- P. Robert
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- A. Chasapis
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- B. Lavraud
- Institut de Recherche en Astrophysique et Planétologie (IRAP), CNRS UMR5277/Université Paul Sabatier Toulouse France
- T. Chust
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- L. Rezeau
- Laboratoire de Physique des Plasmas (LPP), UMR7648 CNRS/Ecole Polytechnique/UPMC/Université Paris‐Sud/Observatoire de Paris Palaiseau France
- F. D. Wilder
- Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USA
- D. B. Graham
- Swedish Institute of Space Physics Uppsala Sweden
- M. R. Argall
- University of New Hampshire Durham New Hampshire USA
- D. J. Gershman
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- P.‐A. Lindqvist
- Royal Institute of Technology Stockholm Sweden
- Y. V. Khotyaintsev
- Swedish Institute of Space Physics Uppsala Sweden
- G. Marklund
- Royal Institute of Technology Stockholm Sweden
- R. E. Ergun
- Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USA
- K. A. Goodrich
- Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder Colorado USA
- J. L. Burch
- Southwest Research Institute San Antonio Texas USA
- R. B. Torbert
- University of New Hampshire Durham New Hampshire USA
- J. Needell
- University of New Hampshire Durham New Hampshire USA
- M. Chutter
- University of New Hampshire Durham New Hampshire USA
- D. Rau
- University of New Hampshire Durham New Hampshire USA
- I. Dors
- University of New Hampshire Durham New Hampshire USA
- C. T. Russell
- University of California Los Angeles California USA
- W. Magnes
- Space Research Institute Austrian Academy of Sciences Graz Austria
- R. J. Strangeway
- University of California Los Angeles California USA
- K. R. Bromund
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- H. K. Leinweber
- University of California Los Angeles California USA
- F. Plaschke
- Space Research Institute Austrian Academy of Sciences Graz Austria
- D. Fischer
- Space Research Institute Austrian Academy of Sciences Graz Austria
- B. J. Anderson
- The Johns Hopkins University Applied Physics Laboratory Laurel Maryland USA
- G. Le
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- T. E. Moore
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- C. J. Pollock
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- B. L. Giles
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- J. C. Dorelli
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- L. Avanov
- NASA Goddard Space Flight Center Greenbelt Maryland USA
- Y. Saito
- Institute for Space and Astronautical Science Sagamihara Japan
- DOI
- https://doi.org/10.1002/2016GL068968
- Journal volume & issue
-
Vol. 43,
no. 12
pp. 5943 – 5952
Abstract
Abstract We present Magnetospheric Multiscale (MMS) mission measurements during a full magnetopause crossing associated with an enhanced southward ion flow. A quasi‐steady magnetospheric whistler mode wave emission propagating toward the reconnection region with quasi‐parallel and oblique wave angles is detected just before the opening of the magnetic field lines and the detection of escaping energetic electrons. Its source is likely the perpendicular temperature anisotropy of magnetospheric energetic electrons. In this region, perpendicular and parallel currents as well as the Hall electric field are calculated and found to be consistent with the decoupling of ions from the magnetic field and the crossing of a magnetospheric separatrix region. On the magnetosheath side, Hall electric fields are found smaller as the density is larger but still consistent with the decoupling of ions. Intense quasi‐parallel whistler wave emissions are detected propagating both toward and away from the reconnection region in association with a perpendicular anisotropy of the high‐energy part of the magnetosheath electron population and a strong perpendicular current, which suggests that in addition to the electron diffusion region, magnetosheath separatrices could be a source region for whistler waves.
Keywords
