Global Survey of Plasma Sheet Electron Precipitation due to Whistler Mode Chorus Waves in Earth's Magnetosphere

Whistler mode chorus waves can scatter plasma sheet electrons into the loss cone and produce the Earth's diffuse aurora. Van Allen Probes observed plasma sheet electron injections and intense chorus waves on 24 November 2012. We use quasilinear theory to calculate the precipitating electron flu...

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Bibliographic Details
Published in:Geophysical research letters 2020-08, Vol.47 (15), p.n/a
Main Authors: Ma, Q., Connor, H. K., Zhang, X.‐J., Li, W., Shen, X.‐C., Gillespie, D., Kletzing, C. A., Kurth, W. S., Hospodarsky, G. B., Claudepierre, S. G., Reeves, G. D., Spence, H. E.
Format: Article
Language:English
Subjects:
Atmosphere
Auroras
chorus wave
Chorus waves
Diffuse aurora
Earth
Earth magnetosphere
Electron density
Electron distribution
Electron flux
Electron precipitation
Electroretinograms
Energy
Energy flux
Energy transfer
Equator
Fluctuations
Geomagnetism
Magnetic equator
Mathematical analysis
Plasma
plasma sheet electron
Polls & surveys
Precipitation
Probes
Satellites
Sensors
Statistical methods
Surveying
Surveys
Upper atmosphere
Van Allen Probes observation
Waves
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Summary:Whistler mode chorus waves can scatter plasma sheet electrons into the loss cone and produce the Earth's diffuse aurora. Van Allen Probes observed plasma sheet electron injections and intense chorus waves on 24 November 2012. We use quasilinear theory to calculate the precipitating electron fluxes, demonstrating that the chorus waves could lead to high differential energy fluxes of precipitating electrons with characteristic energies of 10–30 keV. Using this method, we calculate the precipitating electron flux from 2012 to 2019 when the Van Allen Probes were near the magnetic equator and perform global surveys of electron precipitation under different geomagnetic conditions. The most significant electron precipitation due to chorus is found from the nightside to dawn sectors over 4 
ISSN:0094-8276
1944-8007
DOI:10.1029/2020GL088798