Statistical Study on Locally Generated High‐Frequency Plasmaspheric Hiss and Its Effect on Suprathermal Electrons: Van Allen Probes Observation and Quasi‐linear Simulation

2020 ◽  
Vol 125 (10) ◽  
Author(s):  
Zhaoguo He ◽  
Jiang Yu ◽  
Lunjin Chen ◽  
Zhiyang Xia ◽  
Wenrui Wang ◽  
...  
Keyword(s):  
High Frequency ◽  
Statistical Study ◽  
Suprathermal Electrons ◽  
Van Allen Probes

Statistical study of the storm time radiation belt evolution during Van Allen Probes era: CME- versus CIR-driven storms

2017 ◽  
Vol 122 (8) ◽  
pp. 8327-8339 ◽  
Author(s):  
Xiao-Chen Shen ◽  
Mary K. Hudson ◽  
Allison N. Jaynes ◽  
Quanqi Shi ◽  
Anmin Tian ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Statistical Study ◽  
Van Allen Probes

scholarly journals Plasma fluctuations at the flanks of the Earth's magnetosheath at ion kinetic scales

2016 ◽  
Vol 34 (11) ◽  
pp. 1011-1018 ◽  
Author(s):  
Liudmila Rakhmanova ◽  
Maria Riazantseva ◽  
Georgy Zastenker
Keyword(s):  
High Frequency ◽  
Statistical Study ◽  
Polar Angle ◽  
Power Laws ◽  
Ion Flux ◽  
The Sun ◽  
Flux Vector ◽  
Frequency Range ◽  
Plasma Parameters ◽  
Plasma Fluctuation

Abstract. We present a statistical study of the magnetosheath plasma fluctuation spectra at a high-frequency range (with frequencies from 0.01 to 10 Hz). Variations of ion flux value and its direction are considered. The direction of ion flux is characterized by a polar angle – the deviation of the ion flux vector from the Sun–Earth line. We consider 290 Fourier's spectra that can be described by two power laws with a break, i.e., a change of slope. The ion flux fluctuation spectra are shown to have breaks at higher frequencies compared to the polar angle spectra. We compare the frequency of the break with the gyrostructure frequency for a number of cases. We show the polar angle break frequency to usually be smaller than the gyrostructure frequency. The dependencies of spectrum parameters such as the slopes and the break frequency on plasma parameters are also considered.

Excitation of high-frequency waves with mixed polarization by streaming energetic electrons

1979 ◽  
Vol 22 (2) ◽  
pp. 277-288 ◽  
Author(s):  
L. C. Lee ◽  
C. S. Wu ◽  
H. P. Freund ◽  
D. Dillenburg ◽  
J. Goedert
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Plasma Frequency ◽  
Electron Plasma ◽  
Ion Dynamics ◽  
Electron Plasma Frequency ◽  
Ambient Magnetic Field ◽  
Suprathermal Electrons ◽  
High Frequency Waves ◽  
Thermal Background

The excitation of the slow extraordinary and electron whistler modes with frequencies in the vicinity of the electron plasma frequency is investigated for a plasma which is composed of thermal and suprathermal electrons. Ion dynamics are ignored. The suprathermal electrons are assumed to comprise a long, anisotropic tail parallel to the ambient magnetic field. Instability is found to occur via a relativistic, anomalous gyroresonance with the suprathermal electrons, and to excite waves with frequencies above and below the electron plasma frequency. Landau and cyclotron damping due to the thermal background is included in the treatment.

scholarly journals A statistical study of whistler waves observed by Van Allen Probes (RBSP) and lightning detected by WWLLN

2016 ◽  
Vol 121 (3) ◽  
pp. 2067-2079 ◽  
Author(s):  
Hao Zheng ◽  
Robert H. Holzworth ◽  
James B. Brundell ◽  
Abram R. Jacobson ◽  
John R. Wygant ◽  
...  
Keyword(s):  
Statistical Study ◽  
Whistler Waves ◽  
Van Allen Probes

scholarly journals Van Allen Probes observations of unusually low frequency whistler mode waves observed in association with moderate magnetic storms: Statistical study

2015 ◽  
Vol 42 (18) ◽  
pp. 7273-7281 ◽  
Author(s):  
C. A. Cattell ◽  
A. W. Breneman ◽  
S. A. Thaller ◽  
J. R. Wygant ◽  
C. A. Kletzing ◽  
...  
Keyword(s):  
Statistical Study ◽  
Low Frequency ◽  
Magnetic Storms ◽  
Whistler Mode ◽  
Van Allen Probes ◽  
Whistler Mode Waves

Storm time occurrence and spatial distribution of Pc4 poloidal ULF waves in the inner magnetosphere: A Van Allen Probes statistical study

2015 ◽  
Vol 120 (6) ◽  
pp. 4748-4762 ◽  
Author(s):  
Lei Dai ◽  
Kazue Takahashi ◽  
Robert Lysak ◽  
Chi Wang ◽  
John R. Wygant ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Statistical Study ◽  
Ulf Waves ◽  
Inner Magnetosphere ◽  
Van Allen Probes

scholarly journals A statistical study of spatial distribution and source region size of chorus waves using Van Allen Probes data

2018 ◽  
Author(s):  
Shangchun Teng ◽  
Xin Tao ◽  
Wen Li ◽  
Yi Qi ◽  
Xinliang Gao ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Equatorial Plane ◽  
Statistical Study ◽  
Continuous Wave ◽  
Source Region ◽  
Occurrence Rate ◽  
Data Set ◽  
Chorus Waves ◽  
Van Allen Probes ◽  
Region Size

Abstract. Spatial distribution and source region size of chorus waves are important parameters in understanding their generation.In this work, we analyze over 3 years of continuous wave burst mode data from Van Allen Probes and build a data set of rising and falling tone chorus. For the L shell range covered by Van Allen Probes data (3.5 ≤ L ≤ 7), statistical results demonstrate that the sector where rising tones are most likely to be observed is the dayside during geomagnetically quiet and moderate times and the dawnside during active times. Moreover, rising tone chorus waves have a higher occurrence rate near the equatorial plane, while the falling tone chorus waves have a higher possibility to be observed at lower L-shell and higher magnetic latitude. By analyzing the direction of Poynting wave vector, we statistically investigate the chorus source region size along a field line, and compare the results with previous theoretical estimates. Our analysis confirms previous conclusions that both rising tone and falling tone chorus waves are generated near the equatorial plane, and shows that previous theoretical estimates roughly agree with the observation within a factor of two. Our results provide important insights into further understanding of chorus generation.

Prompt injections of highly relativistic electrons induced by interplanetary shocks: A statistical study of Van Allen Probes observations

2016 ◽  
Vol 43 (24) ◽  
pp. 12,317-12,324 ◽  
Author(s):  
Q. Schiller ◽  
S. G. Kanekal ◽  
L. K. Jian ◽  
X. Li ◽  
A. Jones ◽  
...  
Keyword(s):  
Statistical Study ◽  
Relativistic Electrons ◽  
Interplanetary Shocks ◽  
Van Allen Probes
Sign in / Sign up

Export Citation Format

Share Document