Discovery of very large amplitude whistler-mode waves in Earth's radiation belts

2008 ◽  
Vol 35 (1) ◽  
Author(s):  
C. Cattell ◽  
J. R. Wygant ◽  
K. Goetz ◽  
K. Kersten ◽  
P. J. Kellogg ◽  
...  
Keyword(s):  
Large Amplitude ◽  
Radiation Belts ◽  
Whistler Mode ◽  
Whistler Mode Waves ◽  
Earth's Radiation Belts

scholarly journals Probability of relativistic electron trapping by parallel and oblique whistler-mode waves in Earth's radiation belts

2015 ◽  
Vol 22 (11) ◽  
pp. 112903 ◽  
Author(s):  
A. V. Artemyev ◽  
A. A. Vasiliev ◽  
D. Mourenas ◽  
A. I. Neishtadt ◽  
O. V. Agapitov ◽  
...  
Keyword(s):  
Relativistic Electron ◽  
Radiation Belts ◽  
Electron Trapping ◽  
Whistler Mode ◽  
Whistler Mode Waves ◽  
Earth's Radiation Belts

scholarly journals The properties of large amplitude whistler mode waves in the magnetosphere: Propagation and relationship with geomagnetic activity

2011 ◽  
Vol 38 (17) ◽  
pp. n/a-n/a ◽  
Author(s):  
L. B. Wilson ◽  
C. A. Cattell ◽  
P. J. Kellogg ◽  
J. R. Wygant ◽  
K. Goetz ◽  
...  
Keyword(s):  
Geomagnetic Activity ◽  
Large Amplitude ◽  
Whistler Mode ◽  
Whistler Mode Waves

scholarly journals Co-Existance of Lightning Generated Whistlers, Hiss and Lower Hybrid Noise Observed by e- POP (SWARM-E) –RRI

2020 ◽  
Author(s):  
Ashanthi Maxworth ◽  
Mark Gołkowski ◽  
Glenn Hussey
Keyword(s):  
Geomagnetic Field ◽  
Radiation Belts ◽  
Radio Receiver ◽  
Lower Hybrid ◽  
Wave Power ◽  
Dipole Antennas ◽  
Whistler Mode ◽  
Hybrid Resonance ◽  
Whistler Mode Waves ◽  
Lower Hybrid Resonance

Whistler mode waves play a major role in regulating the lifetime of trapped electrons in the Earth's radiation belts. Specifically, whistler mode hiss waves are one of the mechanisms that maintains the slot region between the inner and outer radiation belts. The generation mechanism of hiss is a topic still under debate with at least three prominent theories present in the literature. Lightning generated whistlers in their ducted or non-ducted modes, are considered to be one of the possible sources of hiss. We present a study of new observations from the Radio Receiver Instrument (RRI) on the Enhanced Polar Outflow Probe (ePOP: currently known as SWARM-E). RRI consists of two orthogonal dipole antennas, which enables polarization measurements, when the satellite boresight is parallel to the geomagnetic field. Here we present 75 passes of ePOP - RRI from 2014 - 2018, in which lightning whistlers and hiss waves were observed. In more than 50% of those passes hiss is found to co-exist with the lightning whistlers. Moreover, the whistler observations are correlated with observations of wave power at the lower-hybrid resonance. The observations and a whistler mode ray-tracing study suggest that multiple-hop lightning induced whistlers can be a source of hiss and plasma instabilities in the magnetosphere.

scholarly journals Long-term evolution of electron distribution function due to nonlinear resonant interaction with whistler mode waves

2018 ◽  
Vol 84 (2) ◽  
Author(s):  
Anton V. Artemyev ◽  
Anatoly I. Neishtadt ◽  
Alexei A. Vasiliev ◽  
Didier Mourenas
Keyword(s):  
Kinetic Equation ◽  
Electron Distribution ◽  
Resonant Interaction ◽  
Long Term Evolution ◽  
Radiation Belts ◽  
Linear Diffusion ◽  
Whistler Mode ◽  
Term Evolution ◽  
Whistler Mode Waves

Accurately modelling and forecasting of the dynamics of the Earth’s radiation belts with the available computer resources represents an important challenge that still requires significant advances in the theoretical plasma physics field of wave–particle resonant interaction. Energetic electron acceleration or scattering into the Earth’s atmosphere are essentially controlled by their resonances with electromagnetic whistler mode waves. The quasi-linear diffusion equation describes well this resonant interaction for low intensity waves. During the last decade, however, spacecraft observations in the radiation belts have revealed a large number of whistler mode waves with sufficiently high intensity to interact with electrons in the nonlinear regime. A kinetic equation including such nonlinear wave–particle interactions and describing the long-term evolution of the electron distribution is the focus of the present paper. Using the Hamiltonian theory of resonant phenomena, we describe individual electron resonance with an intense coherent whistler mode wave. The derived characteristics of such a resonance are incorporated into a generalized kinetic equation which includes non-local transport in energy space. This transport is produced by resonant electron trapping and nonlinear acceleration. We describe the methods allowing the construction of nonlinear resonant terms in the kinetic equation and discuss possible applications of this equation.

Conjugate studies of whistler-mode waves in the Van Allen radiation belts

2011 ◽  
Author(s):  
O. Santolik ◽  
J. S. Pickett ◽  
M. Parrot ◽  
D. A. Gurnett ◽  
N. Cornilleau-Wehrlin
Keyword(s):  
Radiation Belts ◽  
Whistler Mode ◽  
Whistler Mode Waves
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