Resonant scattering of plasma sheet electrons by whistler-mode chorus: Contribution to diffuse auroral precipitation

2008 ◽  
Vol 35 (11) ◽  
Author(s):  
Binbin Ni ◽  
Richard M. Thorne ◽  
Yuri Y. Shprits ◽  
Jacob Bortnik
Keyword(s):  
Plasma Sheet ◽  
Resonant Scattering ◽  
Whistler Mode

scholarly journals Resonant scattering of plasma sheet electrons leading to diffuse auroral precipitation: 2. Evaluation for whistler mode chorus waves

2011 ◽  
Vol 116 (A4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Binbin Ni ◽  
Richard M. Thorne ◽  
Nigel P. Meredith ◽  
Richard B. Horne ◽  
Yuri Y. Shprits
Keyword(s):  
Plasma Sheet ◽  
Resonant Scattering ◽  
Whistler Mode ◽  
Chorus Waves

scholarly journals Electromagnetic ELF wave intensification associated with fast earthward flows in mid-tail plasma sheet

2012 ◽  
Vol 30 (3) ◽  
pp. 467-488 ◽  
Author(s):  
J. Liang ◽  
B. Ni ◽  
C. M. Cully ◽  
E. F. Donovan ◽  
R. M. Thorne ◽  
...  
Keyword(s):  
Plasma Sheet ◽  
Occurrence Rate ◽  
Lower Hybrid ◽  
Angle Distribution ◽  
Frequency Range ◽  
Frequency Wave ◽  
Whistler Mode ◽  
Central Plasma ◽  
Fast Flow ◽  
Flow Activity

Abstract. In this study we perform a statistical survey of the extremely-low-frequency wave activities associated with fast earthward flows in the mid-tail central plasma sheet (CPS) based upon THEMIS measurements. We reveal clear trends of increasing wave intensity with flow enhancement over a broad frequency range, from below fLH (lower-hybrid resonant frequency) to above fce (electron gyrofrequency). We mainly investigate two electromagnetic wave modes, the lower-hybrid waves at frequencies below fLH, and the whistler-mode waves in the frequency range fLH < f < fce. The waves at f < fLH dramatically intensify during fast flow intervals, and tend to contain strong electromagnetic components in the high-plasma-beta CPS region, consistent with the theoretical expectation of the lower-hybrid drift instability in the center region of the tail current sheet. ULF waves with very large perpendicular wavenumber might be Doppler-shifted by the flows and also partly contribute to the observed waves in the lower-hybrid frequency range. The fast flow activity substantially increases the occurrence rate and peak magnitude of the electromagnetic waves in the frequency range fLH < f < fce, though they still tend to be short-lived and sporadic in occurrence. We also find that the electron pitch-angle distribution in the mid-tail CPS undergoes a variation from negative anisotropy (perpendicular temperature smaller than parallel temperature) during weak flow intervals, to more or less positive anisotropy (perpendicular temperature larger than parallel temperature) during fast flow intervals. The flow-related electromagnetic whistler-mode wave tends to occur in conjunction with positive electron anisotropy.

scholarly journals Resonant scattering of plasma sheet electrons leading to diffuse auroral precipitation: 1. Evaluation for electrostatic electron cyclotron harmonic waves

2011 ◽  
Vol 116 (A4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Binbin Ni ◽  
Richard M. Thorne ◽  
Richard B. Horne ◽  
Nigel P. Meredith ◽  
Yuri Y. Shprits ◽  
...  
Keyword(s):  
Plasma Sheet ◽  
Resonant Scattering ◽  
Electron Cyclotron ◽  
Harmonic Waves ◽  
Cyclotron Harmonic

scholarly journals Resonant scattering of central plasma sheet protons by multiband EMIC waves and resultant proton loss timescales

2016 ◽  
Vol 121 (2) ◽  
pp. 1219-1232 ◽  
Author(s):  
Xing Cao ◽  
Binbin Ni ◽  
Jun Liang ◽  
Zheng Xiang ◽  
Qi Wang ◽  
...  
Keyword(s):  
Plasma Sheet ◽  
Resonant Scattering ◽  
Central Plasma ◽  
Central Plasma Sheet ◽  
Proton Loss ◽  
Emic Waves

Generation mechanism of the whistler-mode waves in the plasma sheet prior to magnetic reconnection

2013 ◽  
Vol 52 (1) ◽  
pp. 205-210 ◽  
Author(s):  
X.H. Wei ◽  
J.B. Cao ◽  
G.C. Zhou ◽  
H.S. Fu ◽  
O. Santolík ◽  
...  
Keyword(s):  
Magnetic Reconnection ◽  
Plasma Sheet ◽  
Generation Mechanism ◽  
Whistler Mode ◽  
Whistler Mode Waves
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