Direct observations of energy transfer from resonant electrons to whistler-mode waves in magnetosheath of Earth

被引：0
作者：
N. Kitamura
T. Amano
Y. Omura
S. A. Boardsen
D. J. Gershman
Y. Miyoshi
M. Kitahara
Y. Katoh
H. Kojima
S. Nakamura
M. Shoji
Y. Saito
S. Yokota
B. L. Giles
W. R. Paterson
C. J. Pollock
A. C. Barrie
D. G. Skeberdis
S. Kreisler
O. Le Contel
C. T. Russell
R. J. Strangeway
P.-A. Lindqvist
R. E. Ergun
R. B. Torbert
J. L. Burch
机构：
[1] Nagoya University,Institute for Space
[2] the University of Tokyo,Earth Environmental Research
[3] Kyoto University,Department of Earth and Planetary Science, Graduate School of Science
[4] NASA Goddard Space Flight Center,Research Institute for Sustainable Humanosphere
[5] University of Maryland,Goddard Planetary Heliophysics Institute
[6] Tohoku University,Department of Geophysics, Graduate school of Science
[7] Japan Aerospace Exploration Agency,Institute of Space and Astronautical Science
[8] Osaka University,Department of Earth and Space Science, Graduate School of Science
[9] Denali Scientific,Laboratoire de Physique des Plasmas
[10] Aurora Engineering,Department of Earth, Planetary, and Space Science
[11] a.i. solutions Inc,Laboratory for Atmospheric and Space Physics
[12] CNRS/Sorbonne Université/Université Paris-Saclay/Observatoire de Paris/Ecole Polytechnique Institut Polytechnique de Paris,Department of Physics
[13] University of California,undefined
[14] Royal Institute of Technology,undefined
[15] University of Colorado,undefined
[16] University of New Hampshire,undefined
[17] Southwest Research Institute,undefined
来源：
Nature Communications | / 13卷
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摘要：
Electromagnetic whistler-mode waves in space plasmas play critical roles in collisionless energy transfer between the electrons and the electromagnetic field. Although resonant interactions have been considered as the likely generation process of the waves, observational identification has been extremely difficult due to the short time scale of resonant electron dynamics. Here we show strong nongyrotropy, which rotate with the wave, of cyclotron resonant electrons as direct evidence for the locally ongoing secular energy transfer from the resonant electrons to the whistler-mode waves using ultra-high temporal resolution data obtained by NASA’s Magnetospheric Multiscale (MMS) mission in the magnetosheath. The nongyrotropic electrons carry a resonant current, which is the energy source of the wave as predicted by the nonlinear wave growth theory. This result proves the nonlinear wave growth theory, and furthermore demonstrates that the degree of nongyrotropy, which cannot be predicted even by that nonlinear theory, can be studied by observations.
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  • [1] Tsurutani BT(1997)Some basic concepts of wave-particle interactions in collisionless plasmas Rev. Geophys. 35 491-501
  • [2] Lakhina GS(1965)Cyclotron instabilities and electromagnetic emission in the ultra‐low frequency and very low frequency ranges J. Geophys. Res. 70 61-69
  • [3] Cornwall JM(1966)Limit on stably trapped particle fluxes J. Geophys. Res. 71 1-28
  • [4] Kennel CF(1966)Low-frequency whistler mode Phys. Fluids 9 2190-2202
  • [5] Petschek HE(2016)Suprathermal electron strahl widths in the presence of narrow-band whistler waves in the solar wind Astrophys. J. Lett. 833 172-146
  • [6] Kennel CF(2021)Parker solar probe evidence for scattering of electrons in the young solar wind by narrowband whistler-mode waves Astrophys. J. Lett. 911 L29-230
  • [7] Kajdič P(2017)Electron scattering by high-frequency whistler waves at Earth’s bow shock Astrophys. J. Lett. 842 L11-304
  • [8] Alexandrova O(2020)Observational evidence for stochastic shock drift acceleration of electrons at the Earth’s bow shock Phys. Rev. Lett. 124 065101-84
  • [9] Maksimovic M(2019)Electron scattering by low-frequency whistler waves at Earth’s bow shock Astrophys. J. 886 53-946
  • [10] Lacombe C(1977)VLF emissions associated with enhanced magnetospheric electrons J. Geophys. Res. 82 135-994
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