J. B. Blake
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View article: The Relativistic Electron Magnetic Spectrometer (REMS) Instrument
The Relativistic Electron Magnetic Spectrometer (REMS) Instrument Open
As we move towards proliferated space and smaller, more cost-effective satellites, miniaturization of quality science instrumentation is becoming necessary and possible. This paper describes the Relativistic Electron Magnetic Spectrometer …
View article: Controlling Factors of Chorus Spectral Gaps
Controlling Factors of Chorus Spectral Gaps Open
The present study compares a single‐band chorus wave against a banded chorus wave observed by Van Allen Probes at adjacent times, and demonstrates that the single‐band chorus wave is associated with an anisotropic electron population over …
View article: Testing adiabatic models of energetic electron acceleration at dipolarization fronts
Testing adiabatic models of energetic electron acceleration at dipolarization fronts Open
Betatron acceleration is commonly cited as a primary accelerator of energetic electrons at dipolarization fronts, and many case studies compare observed energetic electrons measurements to a betatron model. In this work, we extend this to …
View article: Atmospheric and ionospheric impacts of energetic particle precipitation (EPP) from Earth’s ring current and radiation belts
Atmospheric and ionospheric impacts of energetic particle precipitation (EPP) from Earth’s ring current and radiation belts Open
Precipitation losses of Earth's ring current and radiation belt particles represent a major loss process that ultimately helps balance the intensity levels of the radiation environment in near-Earth space.Energetic particle precipitation (…
View article: Cross-scale physics and the acceleration of particles in collisionless plasmas throughout the Heliosphere and beyond: III. Radiation belts
Cross-scale physics and the acceleration of particles in collisionless plasmas throughout the Heliosphere and beyond: III. Radiation belts Open
Radiation belt systems are found at all the sufficiently magnetized and sized planets in our Solar System (i.e., Earth, Jupiter, Saturn, Uranus, and Neptune), implying that particle trapping and acceleration in magnetospheric systems is a …
View article: Comparative Study of Dayside Pulsating Auroras Induced by Ultralow-Frequency Waves
Comparative Study of Dayside Pulsating Auroras Induced by Ultralow-Frequency Waves Open
Pulsating auroras are usually observed with ultralow-frequency (ULF) waves in the Pc 3–5 band (period 10–600 s). These auroras are thought to result from interactions between energetic electrons and chorus waves, but their relationship wit…
View article: A comparison of energetic particle energization observations at MMS and injections at Van Allen Probes
A comparison of energetic particle energization observations at MMS and injections at Van Allen Probes Open
In this study, we examine particle energization and injections that show energetic electron enhancements at both MMS in the magnetotail and Van Allen Probes in the inner magnetosphere. Observing injections along with a corresponding flow b…
View article: Correction to: The Van Allen Probes Electric Field and Waves Instrument: Science Results, Measurements, and Access to Data
Correction to: The Van Allen Probes Electric Field and Waves Instrument: Science Results, Measurements, and Access to Data Open
International audience
View article: Radiation Belt Daily Average Electron Flux Model (RB‐Daily‐E) From the Seven‐Year Van Allen Probes Mission and Its Application to Interpret GPS On‐Orbit Solar Array Degradation
Radiation Belt Daily Average Electron Flux Model (RB‐Daily‐E) From the Seven‐Year Van Allen Probes Mission and Its Application to Interpret GPS On‐Orbit Solar Array Degradation Open
We use NASA's Van Allen Probes data to build a 3‐dimensional Radiation Belt Daily Average Electron flux model (RB‐Daily‐E) covering 25 differential energies (33–7,700 keV), 17 pitch angles, and a variable number of L shells from 2 to 7. RB…
View article: Unraveling the Formation Region and Frequency of Chorus Spectral Gaps
Unraveling the Formation Region and Frequency of Chorus Spectral Gaps Open
The present study addresses two basic questions related to banded chorus waves in the Earth’s magnetosphere: 1) are chorus spectral gaps formed near the equatorial source region or during propagation away from the equator? and 2) why are c…
View article: Proton aurora and relativistic electron microbursts scattered by electromagnetic ion cyclotron waves
Proton aurora and relativistic electron microbursts scattered by electromagnetic ion cyclotron waves Open
Charged particle precipitation from Earth’s magnetosphere results in stunning displays of the aurora and energy transfer into the atmosphere. Some of this precipitation is caused by wave-particle interactions. In this study, we present an …
View article: A Statistical Study of Magnetopause Boundary Layer Energetic Electron Enhancements Using MMS
A Statistical Study of Magnetopause Boundary Layer Energetic Electron Enhancements Using MMS Open
We took a survey of boundary layer (or low-latitude boundary layer) crossings by the Magnetospheric Multiscale (MMS) mission. Out of 250 total crossings, about half showed enhancements of high-energy ( 30 keV) electrons in the FEEPS senso…
View article: Modeling the Dynamic Variability of Sub‐Relativistic Outer Radiation Belt Electron Fluxes Using Machine Learning
Modeling the Dynamic Variability of Sub‐Relativistic Outer Radiation Belt Electron Fluxes Using Machine Learning Open
We present a set of neural network models that reproduce the dynamics of electron fluxes in the range of 50 keV ∼1 MeV in the outer radiation belt. The Outer Radiation belt Electron Neural net model for Medium energy electrons uses only so…
View article: Energetic Electron Microinjections Observed by MMS in the Dusk Plasma Sheet and Drift Resonance Interpretation
Energetic Electron Microinjections Observed by MMS in the Dusk Plasma Sheet and Drift Resonance Interpretation Open
Microinjection phenomena, characterized by dispersive oscillations of electron fluxes at the Pc5 period and bi‐directional pitch angle anisotropy, are frequently observed by Magnetospheric Multiscale in the dusk to midnight plasma sheet. I…
View article: The cusp plasma imaging detector (CuPID) cubesat observatory: Instrumentation
The cusp plasma imaging detector (CuPID) cubesat observatory: Instrumentation Open
The Cusp Plasma Imaging Detector (CuPID) CubeSat observatory is a 6U CubeSat designed to observe solar wind charge exchange in magnetospheric cusps to test competing theories of magnetic reconnection at the Earth’s magnetopause. The CuPID …
View article: Electron Precipitation Curtains - Simulating the Microburst Origin Hypothesis
Electron Precipitation Curtains - Simulating the Microburst Origin Hypothesis Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Space Physics. ESSOAr is a venue for early communication or feedback before peer review. Data may be p…
View article: Normal‐ and Reversed‐Boomerang Stripes on Electron Pitch Angle Distributions: Solar Wind Dynamic Pressure Effect
Normal‐ and Reversed‐Boomerang Stripes on Electron Pitch Angle Distributions: Solar Wind Dynamic Pressure Effect Open
In the inner magnetosphere dominated by the dipole magnetic field, energetic electrons of 90° pitch angle drift faster than those of other pitch angles. Electron flux oscillations initiated by injections or drift resonances will be observe…
View article: Competitive Influences of Different Plasma Waves on the Pitch Angle Distribution of Energetic Electrons Inside and Outside Plasmasphere
Competitive Influences of Different Plasma Waves on the Pitch Angle Distribution of Energetic Electrons Inside and Outside Plasmasphere Open
By analyzing the Van Allen Probe B observations and 2‐D simulations, we found that the competitive influences of different plasma waves on the pitch angle distribution of energetic electrons (hundreds of keV) depend on density of ambient p…
View article: The Magnetic Electron Ion Spectrometer: A Review of On-Orbit Sensor Performance, Data, Operations, and Science
The Magnetic Electron Ion Spectrometer: A Review of On-Orbit Sensor Performance, Data, Operations, and Science Open
Measurements from NASA’s Van Allen Probes have transformed our understanding of the dynamics of Earth’s geomagnetically-trapped, charged particle radiation. The Van Allen Probes were equipped with the Magnetic Electron Ion Spectrometers (M…
View article: The Energy Spectra of Electron Microbursts Between 200 keV and 1 MeV
The Energy Spectra of Electron Microbursts Between 200 keV and 1 MeV Open
This study investigates the energy spectrum of electron microbursts observed by the Focused Investigations of Relativistic Electron Burst Intensity, Range, and Dynamics II (FIREBIRD‐II, henceforth FIREBIRD) CubeSats. FIREBIRD is a pair of …
View article: The Energy Spectra of Electron Microbursts Between 200 keV and 1 MeV
The Energy Spectra of Electron Microbursts Between 200 keV and 1 MeV Open
Earth and Space Science Open Archive This work has been accepted for publication in Journal of Geophysical Research - Space Physics. Version of RecordESSOAr is a venue for early communication or feedback before peer review. Data may be pre…
View article: The Energy Spectra of Electron Microbursts Between 200 keV and 1 MeV
The Energy Spectra of Electron Microbursts Between 200 keV and 1 MeV Open
Earth and Space Science Open Archive This work has been accepted for publication in Journal of Geophysical Research - Space Physics. Version of RecordESSOAr is a venue for early communication or feedback before peer review. Data may be pre…
View article: Origin of Electron Boomerang Stripes: Statistical Study
Origin of Electron Boomerang Stripes: Statistical Study Open
In the outer radiation belt, localized ultralow frequency (ULF) waves can interact with energetic electrons by drift resonance, leading to quasiperiodic oscillations. The oscillations in the pitch angle spectrum can be characterized by eit…
View article: Atmospheric scattering of energetic electrons from near-Earth space
Atmospheric scattering of energetic electrons from near-Earth space Open
In near-Earth space, the magnetosphere, energetic electrons (tens to thousands of kiloelectron volts) orbit around Earth, forming the radiation belts. When scattered by magnetospheric processes, these electrons precipitate to the upper atm…
View article: RBSP‐ECT Combined Pitch Angle Resolved Electron Flux Data Product
RBSP‐ECT Combined Pitch Angle Resolved Electron Flux Data Product Open
We describe a new data product combining pitch angle resolved electron flux measurements from the Radiation Belt Storm Probes (RBSP) Energetic Particle Composition and Thermal Plasma (ECT) suite on the National Aeronautics and Space Admini…
View article: Multipoint Observations of Quasiperiodic Emission Intensification and Effects on Energetic Electron Precipitation
Multipoint Observations of Quasiperiodic Emission Intensification and Effects on Energetic Electron Precipitation Open
The two Van Allen Probes simultaneously recorded a coherently modulated quasiperiodic (QP) emission that persisted for 3 h. The magnetic field pulsation at the locations of the two satellites showed a substantial difference, and their freq…
View article: Statistical Properties of Electron Curtain Precipitation Estimated With AeroCube‐6
Statistical Properties of Electron Curtain Precipitation Estimated With AeroCube‐6 Open
Curtain precipitation is a recently discovered stationary, persistent, and latitudinally narrow electron precipitation phenomenon in low Earth orbit. Curtains are observed over consecutive passes of the dual AeroCube‐6 CubeSats while their…
View article: Long‐Term Observations of Galactic Cosmic Ray LET Spectra in Lunar Orbit by LRO/CRaTER
Long‐Term Observations of Galactic Cosmic Ray LET Spectra in Lunar Orbit by LRO/CRaTER Open
The Cosmic Ray Telescope for the Effects of Radiation (CRaTER) has been orbiting the Moon since 2009 aboard the Lunar Reconnaissance Orbiter (LRO). From this vantage point, it samples the interplanetary energetic particle population outsid…
View article: Relativistic Electron Microbursts as High‐Energy Tail of Pulsating Aurora Electrons
Relativistic Electron Microbursts as High‐Energy Tail of Pulsating Aurora Electrons Open
In this study, by simulating the wave‐particle interactions, we show that subrelativistic/relativistic electron microbursts form the high‐energy tail of pulsating aurora (PsA). Whistler‐mode chorus waves that propagate along the magnetic f…