Whistler wave generation by anisotropic tail electrons during asymmetric magnetic reconnection in space and laboratory

Yoo, Jongsoo ; Jara-Almonte, J. ; Yerger, Evan ; Wang, Shan ; Qian, Tony ; Le, Ari ; Ji, Hantao ; Yamada, Masaaki ; Fox, William ; Kim, Eun-Hwa ; Chen, Li-Jen ; Gershman, Daniel
Issue date: 2018
Rights:
Creative Commons Attribution 4.0 International (CC BY)
Cite as:
Yoo, Jongsoo, Jara-Almonte, J., Yerger, Evan, Wang, Shan, Qian, Tony, Le, Ari, Ji, Hantao, Yamada, Masaaki, Fox, William, Kim, Eun-Hwa, Chen, Li-Jen, & Gershman, Daniel. (2018). Whistler wave generation by anisotropic tail electrons during asymmetric magnetic reconnection in space and laboratory [Data set]. Princeton Plasma Physics Laboratory, Princeton University. https://doi.org/10.11578/1562001
@electronic{yoo_jongsoo_2018,
  author      = {Yoo, Jongsoo and
                Jara-Almonte, J. and
                Yerger, Evan and
                Wang, Shan and
                Qian, Tony and
                Le, Ari and
                Ji, Hantao and
                Yamada, Masaaki and
                Fox, William and
                Kim, Eun-Hwa and
                Chen, Li-Jen and
                Gershman, Daniel},
  title       = {{Whistler wave generation by anisotropic
                tail electrons during asymmetric magneti
                c reconnection in space and laboratory}},
  publisher   = {{Princeton Plasma Physics Laboratory, Pri
                nceton University}},
  year        = 2018,
  url         = {https://doi.org/10.11578/1562001}
}
Description:

Whistler wave generation near the magnetospheric separatrix during reconnection at the dayside magnetopause is studied with data from the Magnetospheric Multiscale (MMS) mission. The dispersion relation of the whistler mode is measured for the first time near the reconnection region in space, which shows that whistler waves propagate nearly parallel to the magnetic field line. A linear analysis indicates that the whistler waves are generated by temperature anisotropy in the electron tail population. This is caused by loss of electrons with a high velocity parallel to the magnetic field to the exhaust region. There is a positive correlation between activities of whistler waves and the lower-hybrid drift instability (LHDI) both in laboratory and space, indicating the enhanced transport by LHDI may be responsible for the loss of electrons with a high parallel velocity.

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