scholarly journals Energetic electron precipitation induced by oblique whistler mode chorus emissions

2021 ◽  
Author(s):  
Yi-Kai Hsieh ◽  
Yoshiharu Omura ◽  
Yuko Kubota
Keyword(s):  
Energetic Electron ◽  
Electron Precipitation ◽  
Whistler Mode

scholarly journals Quantification of Energetic Electron Precipitation Driven by Plume Whistler Mode Waves, Plasmaspheric Hiss, and Exohiss

2019 ◽  
Vol 46 (7) ◽  
pp. 3615-3624 ◽  
Author(s):  
W. Li ◽  
X.‐C. Shen ◽  
Q. Ma ◽  
L. Capannolo ◽  
R. Shi ◽  
...  
Keyword(s):  
Energetic Electron ◽  
Electron Precipitation ◽  
Whistler Mode ◽  
Whistler Mode Waves

Energetic electron precipitation via oblique whistler mode chorus emissions in the outer radiation belt

2021 ◽  
Author(s):  
Yikai Hsieh ◽  
Yoshiharu Omura
Keyword(s):  
Cyclotron Resonance ◽  
Energetic Electron ◽  
Particle Simulation ◽  
Electron Precipitation ◽  
Particle Interactions ◽  
Outer Radiation Belt ◽  
Whistler Mode ◽  
Mode Wave ◽  
Whistler Mode Wave ◽  
Wave Particle Interactions

<p>Whistler mode chorus emissions in the Earth’s magnetosphere cause energetic electron precipitation and the associated pulsating aurora. First-order cyclotron resonance in parallel whistler mode wave-particle interactions is the main mechanism of the precipitation. Not only cyclotron resonance but also Landau resonance and higher-order cyclotron resonances occur in the oblique whistler mode wave-particle interactions. Especially, electrons can be accelerated and scattered to lower equatorial pitch angles rapidly via Landau resonance. We apply test particle simulation and the Green’s function method to check the energetic electron precipitation caused by oblique chorus emissions. We simulate the wave-particle interactions around L=4.5 for electron ranges from 10 keV to a few MeV. We further compare the precipitation fluxes between parallel and oblique chorus emissions. Our simulation result reveals that oblique chorus emissions lead to more electron precipitation than parallel chorus emissions. At kinetic energy E < 100 keV, the electron precipitation ratio (oblique case/parallel case) is about 1.3. At 100 keV < E < 0.5 MeV, the ratio is greater than 2. At E > 0.5 MeV, the ratio is greater than 2 orders. Multiple resonances effect in the oblique whistler mode wave-particle interactions is the reason for the greater precipitation.</p>

Multi‐point observations of modulated whistler‐mode waves and energetic electron precipitation

2021 ◽  
Author(s):  
Murong Qin ◽  
Wen Li ◽  
Qianli Ma ◽  
Leslie Woodger ◽  
Robyn Millan ◽  
...  
Keyword(s):  
Energetic Electron ◽  
Electron Precipitation ◽  
Whistler Mode ◽  
Whistler Mode Waves

scholarly journals Strong localized variations of the low-altitude energetic electron fluxes in the evening sector near the plasmapause

1998 ◽  
Vol 16 (1) ◽  
pp. 25-33 ◽  
Author(s):  
E. E. Titova ◽  
T. A. Yahnina ◽  
A. G. Yahnin ◽  
B. B. Gvozdevsky ◽  
A. A. Lyubchich ◽  
...  
Keyword(s):  
Sharp Increase ◽  
Electron Flux ◽  
Particle Interaction ◽  
Energetic Electron ◽  
Recovery Phase ◽  
Electron Precipitation ◽  
Statistical Characteristics ◽  
Evening Sector ◽  
Proton Precipitation ◽  
Low Altitude

Abstract. Specific type of energetic electron precipitation accompanied by a sharp increase in trapped energetic electron flux are found in the data obtained from low-altitude NOAA satellites. These strongly localized variations of the trapped and precipitated energetic electron flux have been observed in the evening sector near the plasmapause during recovery phase of magnetic storms. Statistical characteristics of these structures as well as the results of comparison with proton precipitation are described. We demonstrate the spatial coincidence of localized electron precipitation with cold plasma gradient and whistler wave intensification measured on board the DE-1 and Aureol-3 satellites. A simultaneous localized sharp increase in both trapped and precipitating electron flux could be a result of significant pitch-angle isotropization of drifting electrons due to their interaction via cyclotron instability with the region of sharp increase in background plasma density.Key words. Ionosphere (particle precipitation; wave-particle interaction) Magnetospheric Physics (plasmasphere)

scholarly journals ULF modulation of energetic electron precipitation observed by VLF/LF radio propagation

2020 ◽  
Vol 2020 (372) ◽  
pp. 29-40
Author(s):  
Takuya Miyashita ◽  
Hiroyo Ohya ◽  
Fuminori Tsuchiya ◽  
Asuka Hirai ◽  
Mitsunori Ozaki ◽  
...  
Keyword(s):  
Energetic Electron ◽  
Electron Precipitation ◽  
Radio Propagation

scholarly journals The effect of energetic electron precipitation on middle mesospheric night-time ozone during and after a moderate geomagnetic storm

2012 ◽  
Vol 39 (21) ◽  
pp. n/a-n/a ◽  
Author(s):  
M. Daae ◽  
P. Espy ◽  
H. Nesse Tyssøy ◽  
D. Newnham ◽  
J. Stadsnes ◽  
...  
Keyword(s):  
Geomagnetic Storm ◽  
Energetic Electron ◽  
Electron Precipitation ◽  
Night Time

Maintenance of the middle-latitude nocturnal D-layer by energetic electron precipitation

1976 ◽  
Vol 114 (4) ◽  
pp. 497-508 ◽  
Author(s):  
Walther N. Spjeldvik ◽  
Richard M. Thorne
Keyword(s):  
Energetic Electron ◽  
Middle Latitude ◽  
Electron Precipitation
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