scholarly journals Location of intense electromagnetic ion cyclotron (EMIC) wave events relative to the plasmapause: Van Allen Probes observations

2017 ◽  
Vol 122 (4) ◽  
pp. 4064-4088 ◽  
Author(s):  
S. S. Tetrick ◽  
M. J. Engebretson ◽  
J. L. Posch ◽  
C. N. Olson ◽  
C. W. Smith ◽  
...  
Keyword(s):  
Emic Wave ◽  
Van Allen Probes ◽  
Ion Cyclotron

scholarly journals Statistical distribution of EMIC wave spectra: Observations from Van Allen Probes

2016 ◽  
Vol 43 (24) ◽  
pp. 12,348-12,355 ◽  
Author(s):  
X.-J. Zhang ◽  
W. Li ◽  
R. M. Thorne ◽  
V. Angelopoulos ◽  
J. Bortnik ◽  
...  
Keyword(s):  
Statistical Distribution ◽  
Wave Spectra ◽  
Emic Wave ◽  
Van Allen Probes

scholarly journals Simultaneous Observations of Electromagnetic Ion Cyclotron (EMIC) Waves and Pitch Angle Scattering During a Van Allen Probes Conjunction

2020 ◽  
Vol 125 (4) ◽  
Author(s):  
K. Sigsbee ◽  
C. A. Kletzing ◽  
J. B. Faden ◽  
A. N. Jaynes ◽  
G. D. Reeves ◽  
...  
Keyword(s):  
Pitch Angle ◽  
Angle Scattering ◽  
Van Allen Probes ◽  
Ion Cyclotron ◽  
Emic Waves

scholarly journals On the Impacts of Ions of Ionospheric Origin and Their Composition on Magnetospheric EMIC Waves

2021 ◽  
Vol 8 ◽  
Author(s):  
Justin H. Lee ◽  
Lauren W. Blum ◽  
Lunjin Chen
Keyword(s):  
Wave Generation ◽  
Magnetospheric Plasma ◽  
Large Numbers ◽  
Emic Wave ◽  
Direct Measurements ◽  
Ion Cyclotron ◽  
Earth's Magnetosphere ◽  
Ion Species ◽  
Emic Waves

Large numbers of theory and observation studies have been conducted on electromagnetic ion cyclotron (EMIC) waves occurring in Earth’s magnetosphere. Numerous studies have shown that accurately specifying the ions of ionospheric origin and their composition can greatly improve understanding of magnetospheric EMIC waves, specifically their generation, their properties, and their effects on the magnetospheric plasma populations. With the launch and operations of multiple recent missions carrying plasma instrumentation capable of acquiring direct measurements of multiple ion species, we use this opportunity to review recent magnetospheric EMIC wave efforts utilizing these new assets, with particular focus on the role of ions of ionospheric origin in wave generation, propagation, and interaction with particles. The review of progress leads us to a discussion of the unresolved questions to be investigated using future modeling capabilities or when new missions or instrumentation capabilities are developed.

The Relationship Between EMIC Wave Properties and Proton Distributions Based on Van Allen Probes Observations

2019 ◽  
Vol 46 (8) ◽  
pp. 4070-4078 ◽  
Author(s):  
Chao Yue ◽  
Chae‐Woo Jun ◽  
Jacob Bortnik ◽  
Xin An ◽  
Qianli Ma ◽  
...  
Keyword(s):  
Emic Wave ◽  
Van Allen Probes ◽  
The Relationship ◽  
Wave Properties

scholarly journals Comparing simulated and observed EMIC wave amplitudes using in situ Van Allen Probes’ measurements

2018 ◽  
Vol 177 ◽  
pp. 190-201 ◽  
Author(s):  
A.A. Saikin ◽  
V.K. Jordanova ◽  
J.C. Zhang ◽  
C.W. Smith ◽  
H.E. Spence ◽  
...  
Keyword(s):  
Emic Wave ◽  
Van Allen Probes

scholarly journals MMS, Van Allen Probes, GOES 13, and Ground-Based Magnetometer Observations of EMIC Wave Events Before, During, and After a Modest Interplanetary Shock

2018 ◽  
Vol 123 (10) ◽  
pp. 8331-8357 ◽  
Author(s):  
M. J. Engebretson ◽  
J. L. Posch ◽  
N. S. S. Capman ◽  
N. G. Campuzano ◽  
P. Bělik ◽  
...  
Keyword(s):  
Interplanetary Shock ◽  
Emic Wave ◽  
Van Allen Probes

scholarly journals Electromagnetic ion-cyclotron instability in the presence of a parallel electric field with general loss-cone distribution function - particle aspect analysis

2006 ◽  
Vol 24 (7) ◽  
pp. 1919-1930 ◽  
Author(s):  
G. Ahirwar ◽  
P. Varma ◽  
M. S. Tiwari
Keyword(s):  
Growth Rate ◽  
Distribution Function ◽  
Electric Field ◽  
General Distribution ◽  
Marginal Stability ◽  
Parallel Electric Field ◽  
Loss Cone ◽  
Emic Wave ◽  
Ion Cyclotron ◽  
Particle Aspect Analysis

Abstract. The effect of parallel electric field on the growth rate, parallel and perpendicular resonant energy and marginal stability of the electromagnetic ion-cyclotron (EMIC) wave with general loss-cone distribution function in a low β homogeneous plasma is investigated by particle aspect approach. The effect of the steepness of the loss-cone distribution is investigated on the electromagnetic ion-cyclotron wave. The whole plasma is considered to consist of resonant and non-resonant particles. It is assumed that resonant particles participate in the energy exchange with the wave, whereas non-resonant particles support the oscillatory motion of the wave. The wave is assumed to propagate parallel to the static magnetic field. The effect of the parallel electric field with the general distribution function is to control the growth rate of the EMIC waves, whereas the effect of steep loss-cone distribution is to enhance the growth rate and perpendicular heating of the ions. This study is relevant to the analysis of ion conics in the presence of an EMIC wave in the auroral acceleration region of the Earth's magnetoplasma.

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