D. Mourenas
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View article: Nonlinear Electron Interactions With Intense VLF Waves From Transmitters
Nonlinear Electron Interactions With Intense VLF Waves From Transmitters Open
The impact on electron lifetimes of nonlinear interactions with the most intense very low frequency (VLF) waves from transmitters has hitherto been neglected in radiation belt codes. Here, we show the presence of a small population of inte…
Low Plasma Density Estimation Based on Measurements of Electron Cyclotron Harmonic Waves Open
The electron plasma frequency to cyclotron frequency ratio is a crucial parameter for accurately evaluating local chorus wave‐driven electron acceleration and loss in the inner magnetosphere. In the present work, we propose a method for in…
The Role of Nonlinear Resonant Interactions in Energetic Electron Precipitation: Insights from ELFIN Observations Open
Energetic electron precipitation from the outer radiation belt is a key mechanism of electron loss in Earth’s magnetosphere. This precipitation is largely governed by resonant interactions between electrons and electromagnetic ion cy…
Statistical Relationship Between Electron Flux and Resonant Chorus Wave Power Near the Flux Limit Open
Electron precipitation by chorus whistler‐mode waves generated by the same electron population is expected to play an important role in the dynamics of the outer radiation belt, potentially setting a hard upper limit on trapped energetic e…
Nonlinear resonant interactions of radiation belt electrons with intense whistler-mode waves Open
The dynamics of the Earth's outer radiation belt, filled by energetic electron fluxes, is largely controlled by electron resonant interactions with electromagnetic whistler-mode waves. The most coherent and intense waves resonantly interac…
View article: Latitudinal Mapping of Chorus Waves Growth Rates Based on Multi‐Spacecraft Wave and Plasma Measurements
Latitudinal Mapping of Chorus Waves Growth Rates Based on Multi‐Spacecraft Wave and Plasma Measurements Open
Whistler mode chorus waves are one of the most intense and important electromagnetic emissions in the Earth's radiation belt, where these waves are responsible for electron acceleration to relativistic energies and for energetic electron p…
Impact of EMIC Waves on Electron Flux Dropouts Measured by GPS Spacecraft: Insights From ELFIN Open
Although the effects of electromagnetic ion cyclotron (EMIC) waves on the dynamics of the Earth's outer radiation belt have been a topic of intense research for more than 20 years, their influence on rapid dropouts of electron flux has not…
Relativistic electron flux decay and recovery: relative roles of EMIC waves, chorus waves, and electron injections Open
We investigate the dynamics of relativistic electrons in the Earth's outer radiation belt by analyzing the interplay of several key physical processes: electron losses due to pitch angle scattering from electromagnetic ion cyclotron (EMIC)…
Inclusion of Nonresonant Effects Into Quasi‐Linear Diffusion Rates for Electron Scattering by Electromagnetic Ion Cyclotron Waves Open
Electromagnetic ion cyclotron (EMIC) waves are a key plasma mode affecting radiation belt dynamics. These waves are important for relativistic electron losses through scattering and precipitation into Earth's ionosphere. Although theoretic…
Omnidirectional Energetic Electron Fluxes from 150 km to 20,000 km: an ELFIN-Based Model Open
The strong variations of energetic electron fluxes in the Earth's inner magnetosphere are notoriously hard to forecast. Developing accurate empirical models of electron fluxes from low to high altitudes at all latitudes is therefore useful…
Checking Key Assumptions of the Kennel‐Petschek Flux Limit With ELFIN CubeSats Open
In planetary radiation belts, the Kennel‐Petschek flux limit is expected to set an upper limit on trapped electron fluxes at 80–600 keV in the presence of efficient electron loss through pitch‐angle diffusion by whistler‐mode chorus waves …
Properties of Intense H‐Band Electromagnetic Ion Cyclotron Waves: Implications for Quasi‐Linear, Nonlinear, and Nonresonant Wave‐Particle Interactions Open
Resonant interactions between relativistic electrons and electromagnetic ion cyclotron (EMIC) waves provide an effective loss mechanism for this important electron population in the outer radiation belt. The diffusive regime of electron sc…
Key factors determining nightside energetic electron losses driven by whistler-mode waves Open
Energetic electron losses by pitch-angle scattering and precipitation to the atmosphere from the radiation belts are controlled, to a great extent, by resonant wave particle interactions with whistler-mode waves. The efficacy of such preci…
Properties of Intense Electromagnetic Ion Cyclotron Waves: Implications for Quasi-linear, Nonlinear, and Nonresonant Wave-Particle Interactions Open
Resonant interactions between relativistic electrons and electromagnetic ion cyclotron (EMIC) waves provide an effective loss mechanism for this important electron population in the outer radiation belt. The diffusive regime of electron sc…
Ionospheric Plasma Density Gradients Associated With Night‐Side Energetic Electron Precipitation Open
Energetic electron precipitation from the equatorial magnetosphere into the atmosphere plays an important role in magnetosphere‐ionosphere coupling: precipitating electrons alter ionospheric properties, whereas ionospheric outflows modify …
Upper Limit on Outer Radiation Belt Electron Flux Based on Dynamical Equilibrium Open
In the Earth's radiation belts, an upper limit on the electron flux is expected to be imposed by the Kennel‐Petschek mechanism, through the generation of exponentially more intense whistler‐mode waves as the trapped flux increases above th…
View article: Energetic Electron Precipitation Driven by Electromagnetic Ion Cyclotron Waves from ELFIN’s Low Altitude Perspective
Energetic Electron Precipitation Driven by Electromagnetic Ion Cyclotron Waves from ELFIN’s Low Altitude Perspective Open
We review comprehensive observations of electromagnetic ion cyclotron (EMIC) wave-driven energetic electron precipitation using data collected by the energetic electron detector on the Electron Losses and Fields InvestigatioN (ELFIN) missi…
Nonresonant scattering of energetic electrons by electromagnetic ion cyclotron waves: spacecraft observations and theoretical framework Open
Electromagnetic ion cyclotron (EMIC) waves lead to rapid scattering of relativistic electrons in Earth's radiation belts, due to their large amplitudes relative to other waves that interact with electrons of this energy range. A central fe…
Nonresonant scattering of energetic electrons by electromagnetic ion cyclotron waves: spacecraft observations and theoretical framework Open
This repository contains the simulation dataset, plotting scripts, and optimization package for the manuscript ``Nonresonant scattering of energetic electrons by electromagnetic ion cyclotron waves: spacecraft observations and theoretical …
Nonresonant scattering of energetic electrons by electromagnetic ion cyclotron waves: spacecraft observations and theoretical framework Open
This repository contains the simulation dataset, plotting scripts, and optimization package for the manuscript ``Nonresonant scattering of energetic electrons by electromagnetic ion cyclotron waves: spacecraft observations and theoretical …
Bursty Energetic Electron Precipitation by High‐Order Resonance With Very‐Oblique Whistler‐Mode Waves Open
Resonant interactions with whistler‐mode waves are one of the most important drivers for rapid energetic electron precipitation. In this letter, we study a conjunction event, where bursts of energetic electron precipitation (50–800 keV) wi…
Quantifying the Contribution of Nonlinear Resonant Effects to Diffusion Rates Open
The wave-particle resonant interaction is a key process controlling energetic electron flux dynamics in the Earth’s radiation belts. All existing radiation belt codes are Fokker-Planck models relying on the quasi-linear diffusion the…
Temporal Scales of Electron Precipitation Driven by Whistler-Mode Waves Open
Electron resonant scattering by whistler-mode waves is one of the most important mechanisms responsible for electron precipitation to the Earth's atmosphere. We investigate temporal and spatial scales of such precipitation with measurement…
View article: Energetic electron precipitation driven by electromagnetic ion cyclotron waves from ELFIN's low altitude perspective
Energetic electron precipitation driven by electromagnetic ion cyclotron waves from ELFIN's low altitude perspective Open
We review comprehensive observations of electromagnetic ion cyclotron (EMIC) wave-driven energetic electron precipitation using data from the energetic electron detector on the Electron Losses and Fields InvestigatioN (ELFIN) mission, two …
Extreme Energy Spectra of Relativistic Electron Flux in the Outer Radiation Belt Open
Electron diffusion by whistler‐mode chorus waves is one of the key processes controlling the dynamics of relativistic electron fluxes in the Earth's radiation belts. It is responsible for the acceleration of sub‐relativistic electrons inje…
Nonresonant Scattering of Relativistic Electrons by Electromagnetic Ion Cyclotron Waves in Earth’s Radiation Belts Open
Electromagnetic ion cyclotron waves are expected to pitch-angle scatter and cause atmospheric precipitation of relativistic (>1 MeV) electrons under typical conditions in Earth's radiation belts. However, it has been a long-standing myster…
A Climatology of Long‐Duration High 2‐MeV Electron Flux Periods in the Outer Radiation Belt Open
Since the advent of the Space Age, the importance of understanding and forecasting relativistic electron fluxes in the Earth’s radiation belts has been steadily growing due to the threat that such particles pose to satellite electronics. H…
On the Nature of Intense Sub‐Relativistic Electron Precipitation Open
Energetic electron precipitation into Earth's atmosphere is an important process for radiation belt dynamics and magnetosphere‐ionosphere coupling. The most intense form of such precipitation is microbursts—short‐lived bursts of precipitat…
Short Chorus Wave Packets: Generation Within Chorus Elements, Statistics, and Consequences on Energetic Electron Precipitation Open
Short and intense lower‐band chorus wave packets are ubiquitous in the Earth's outer radiation belt. In this article, we perform various Vlasov hybrid simulations, with one or two triggering waves, to study the generation of short chorus p…