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J. L. Burch - One of the best experts on this subject based on the ideXlab platform.

  • Electron-Driven Dissipation in a Tailward Flow Burst
    Geophysical Research Letters, 2019
    Co-Authors: Z. Z. Chen, C. M. Liu, T. Y. Wang, R. E. Ergun, Giulia Cozzani, S. Y. Huang, Y. V. Khotyaintsev, Olivier Le Contel, B. L. Giles, J. L. Burch
    Abstract:

    Traditionally, the magnetotail flow burst outside the diffusion region is known to carry ions and electrons together (Vi = Ve), with the frozen-in condition well satisfied (E Ve × B = 0). Such picture, however, may not be true, based on our analyses of the high-resolution MMS (Magnetospheric Multiscale mission) data. We find that inside the flow burst the electrons and ions can be decoupled (Ve != Vi), with the electron speed 5 times larger than the ion speed. Such super-Alfvenic electron jet, having scale of 10 di (ion inertial length) in XGSM direction, is associated with electron demagnetization (E Ve × B != 0), electron agyrotropy (crescent distribution), and O-line magnetic topology but not associated with the flow reversal and X-line topology; it can cause strong energy dissipation and electron heating. We quantitatively analyze the dissipation and find that it is primarily attributed to lower hybrid drift waves. These results emphasize the non-MHD (Magnetohydrodynamics) behaviors of magnetotail flow bursts and the role of lower hybrid drift waves in dissipating energies.

Z. Z. Chen - One of the best experts on this subject based on the ideXlab platform.

  • Electron-Driven Dissipation in a Tailward Flow Burst
    Geophysical Research Letters, 2019
    Co-Authors: Z. Z. Chen, C. M. Liu, T. Y. Wang, R. E. Ergun, Giulia Cozzani, S. Y. Huang, Y. V. Khotyaintsev, Olivier Le Contel, B. L. Giles, J. L. Burch
    Abstract:

    Traditionally, the magnetotail flow burst outside the diffusion region is known to carry ions and electrons together (Vi = Ve), with the frozen-in condition well satisfied (E Ve × B = 0). Such picture, however, may not be true, based on our analyses of the high-resolution MMS (Magnetospheric Multiscale mission) data. We find that inside the flow burst the electrons and ions can be decoupled (Ve != Vi), with the electron speed 5 times larger than the ion speed. Such super-Alfvenic electron jet, having scale of 10 di (ion inertial length) in XGSM direction, is associated with electron demagnetization (E Ve × B != 0), electron agyrotropy (crescent distribution), and O-line magnetic topology but not associated with the flow reversal and X-line topology; it can cause strong energy dissipation and electron heating. We quantitatively analyze the dissipation and find that it is primarily attributed to lower hybrid drift waves. These results emphasize the non-MHD (Magnetohydrodynamics) behaviors of magnetotail flow bursts and the role of lower hybrid drift waves in dissipating energies.

B. L. Giles - One of the best experts on this subject based on the ideXlab platform.

  • Electron-Driven Dissipation in a Tailward Flow Burst
    Geophysical Research Letters, 2019
    Co-Authors: Z. Z. Chen, C. M. Liu, T. Y. Wang, R. E. Ergun, Giulia Cozzani, S. Y. Huang, Y. V. Khotyaintsev, Olivier Le Contel, B. L. Giles, J. L. Burch
    Abstract:

    Traditionally, the magnetotail flow burst outside the diffusion region is known to carry ions and electrons together (Vi = Ve), with the frozen-in condition well satisfied (E Ve × B = 0). Such picture, however, may not be true, based on our analyses of the high-resolution MMS (Magnetospheric Multiscale mission) data. We find that inside the flow burst the electrons and ions can be decoupled (Ve != Vi), with the electron speed 5 times larger than the ion speed. Such super-Alfvenic electron jet, having scale of 10 di (ion inertial length) in XGSM direction, is associated with electron demagnetization (E Ve × B != 0), electron agyrotropy (crescent distribution), and O-line magnetic topology but not associated with the flow reversal and X-line topology; it can cause strong energy dissipation and electron heating. We quantitatively analyze the dissipation and find that it is primarily attributed to lower hybrid drift waves. These results emphasize the non-MHD (Magnetohydrodynamics) behaviors of magnetotail flow bursts and the role of lower hybrid drift waves in dissipating energies.

Olivier Le Contel - One of the best experts on this subject based on the ideXlab platform.

  • Electron-Driven Dissipation in a Tailward Flow Burst
    Geophysical Research Letters, 2019
    Co-Authors: Z. Z. Chen, C. M. Liu, T. Y. Wang, R. E. Ergun, Giulia Cozzani, S. Y. Huang, Y. V. Khotyaintsev, Olivier Le Contel, B. L. Giles, J. L. Burch
    Abstract:

    Traditionally, the magnetotail flow burst outside the diffusion region is known to carry ions and electrons together (Vi = Ve), with the frozen-in condition well satisfied (E Ve × B = 0). Such picture, however, may not be true, based on our analyses of the high-resolution MMS (Magnetospheric Multiscale mission) data. We find that inside the flow burst the electrons and ions can be decoupled (Ve != Vi), with the electron speed 5 times larger than the ion speed. Such super-Alfvenic electron jet, having scale of 10 di (ion inertial length) in XGSM direction, is associated with electron demagnetization (E Ve × B != 0), electron agyrotropy (crescent distribution), and O-line magnetic topology but not associated with the flow reversal and X-line topology; it can cause strong energy dissipation and electron heating. We quantitatively analyze the dissipation and find that it is primarily attributed to lower hybrid drift waves. These results emphasize the non-MHD (Magnetohydrodynamics) behaviors of magnetotail flow bursts and the role of lower hybrid drift waves in dissipating energies.

Y. V. Khotyaintsev - One of the best experts on this subject based on the ideXlab platform.

  • Electron-Driven Dissipation in a Tailward Flow Burst
    Geophysical Research Letters, 2019
    Co-Authors: Z. Z. Chen, C. M. Liu, T. Y. Wang, R. E. Ergun, Giulia Cozzani, S. Y. Huang, Y. V. Khotyaintsev, Olivier Le Contel, B. L. Giles, J. L. Burch
    Abstract:

    Traditionally, the magnetotail flow burst outside the diffusion region is known to carry ions and electrons together (Vi = Ve), with the frozen-in condition well satisfied (E Ve × B = 0). Such picture, however, may not be true, based on our analyses of the high-resolution MMS (Magnetospheric Multiscale mission) data. We find that inside the flow burst the electrons and ions can be decoupled (Ve != Vi), with the electron speed 5 times larger than the ion speed. Such super-Alfvenic electron jet, having scale of 10 di (ion inertial length) in XGSM direction, is associated with electron demagnetization (E Ve × B != 0), electron agyrotropy (crescent distribution), and O-line magnetic topology but not associated with the flow reversal and X-line topology; it can cause strong energy dissipation and electron heating. We quantitatively analyze the dissipation and find that it is primarily attributed to lower hybrid drift waves. These results emphasize the non-MHD (Magnetohydrodynamics) behaviors of magnetotail flow bursts and the role of lower hybrid drift waves in dissipating energies.