JpGU-AGU Joint Meeting 2017

Presentation information

[EE] Oral

P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM13] [EE] Exploring space plasma processes with Magnetospheric Multiscale (MMS) mission

Sat. May 20, 2017 9:00 AM - 10:30 AM 105 (International Conference Hall 1F)

convener:Hiroshi Hasegawa(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Thomas Earle Moore(NASA Goddard Space Flight Ctr), Benoit Lavraud(IRAP), Seiji Zenitani(NAOJ National Astronomical Observatory of Japan), Chairperson:Hiroshi Hasegawa(Institute of Space and Astronautical Science, JAXA)

10:00 AM - 10:15 AM

[PEM13-05] Waves and wave-particle interactions in magnetopause reconnection

★Invited papers

*Daniel Bruce Graham1, Yuri Khotyaintsev1, Andris Vaivads1, Cecilia Norgren1, Mats Andre1, James Webster2, James L Burch3, Per-Arne Lindqvist4, Göran Marklund4, Olivier Le Contel5, Robert Ergun6, Roy Torbert7, William Paterson8, Daniel Gershman8, Barbara Giles8, Craig J Pollock8, John Dorelli8, Levon Avanov8, Benoit Lavraud9, Yoshifumi Saito10, Werner Magnus11, Christopher T Russell12, Robert Strangeway12 (1.IRF Swedish Institute of Space Physics, Uppsala, Sweden, 2.Rice University, Houston, TX, USA, 3.Southwest Research Institute, San Antonio, TX, USA, 4.KTH Royal Institute of Technology, Stockholm, Sweden, 5.LPP, CNRS, Palaiseau, France, 6.LASP, University of Colorado, Boulder, CO, USA, 7.University of New Hampshire, Durham, NH, USA, 8.NASA Goddard Space Flight Center, Greenbelt, MD, USA, 9.IRAP, CNRS, Toulouse, France, 10.JAXA, Chofu, Japan, 11.Space Research Institute, Austrian Academy of Sciences, Graz, Austria, 12.Department of Earth and Space Sciences, University of California, Los Angeles, California, USA)

Keywords:Magnetic reconnection, Plasma waves, Wave-particle interactions

The role of waves in magnetic reconnection remains an outstanding question. Waves can produce particle heating and acceleration, particle diffusion, and anomalous resistivity, all of which can impact ongoing reconnection. Therefore, it is crucial to characterize the waves associated with magnetic reconnection. We investigate the waves that develop near the electron and ion diffusion regions of asymmetric reconnection at Earth's magnetopause using the Magnetospheric Multiscale spacecraft. In particular, we show that near the stagnation point intense lower hybrid drift waves are produced, which result in cross-field particle diffusion, broadening the density gradient in ion diffusion region and magnetospheric separatrices. We also show that agyrotropic beams generated in EDRs can become unstable to high-frequency electrostatic waves. These waves are sufficiently large to thermalize the beam, potentially modifying the electron dynamics near or within EDRs. We discuss the role these waves play in ongoing magnetic reconnection.