D. N. Baker
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View article: Fine Structure of Relativistic Electron Precipitation Driven by EMIC Waves: CIRBE/REPTile‐2 Measurements and Physical Implications
Fine Structure of Relativistic Electron Precipitation Driven by EMIC Waves: CIRBE/REPTile‐2 Measurements and Physical Implications Open
Electromagnetic ion cyclotron (EMIC) waves are commonly observed electromagnetic emissions in Earth's magnetosphere and are widely considered to efficiently scatter relativistic electrons into bounce loss cones. However, their precise scat…
View article: Transient Blurring of the Scintillation Arc of Pulsar B1737+13
Transient Blurring of the Scintillation Arc of Pulsar B1737+13 Open
For many pulsars, the scattering structures responsible for scintillation are typically dominated by a single, thin screen along the line of sight, which persists for years or decades. In recent years, an increasing number of doubly lensed…
View article: Autonomy at Levels for Spacecraft
Autonomy at Levels for Spacecraft Open
Autonomy at Levels is the idea that autonomy should be embedded within and throughout a spacecraft. Using Systems Engineering methods a spacecraft is typically decomposed into systems, subsystems, assemblies, components, and so on. All the…
View article: Exploring K-12 Teachers’ Definitions and Perspectives of Cybersecurity
Exploring K-12 Teachers’ Definitions and Perspectives of Cybersecurity Open
Because K-12 teachers have access to private educational data, they are increasingly at risk of being affected by cybersecurity threats. Examining how teachers conceptualize cybersecurity is vital so that cybersecurity training can be tail…
View article: First Observation of Mini Harmonic Structure in Magnetosonic Waves
First Observation of Mini Harmonic Structure in Magnetosonic Waves Open
We recently reported the finding of elementary rising‐tone emissions embedded within each harmonic of magnetosonic waves, by investigating wave electric field waveforms measured by Van Allen Probes. The present study further uncovers a new…
View article: A Small Pathbreaking Spacecraft: Giants of Space Research (Bernard Blake, Dieter Hovestadt, and Edward Stone)
A Small Pathbreaking Spacecraft: Giants of Space Research (Bernard Blake, Dieter Hovestadt, and Edward Stone) Open
The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situa…
View article: Levels of Spacecraft Autonomy
Levels of Spacecraft Autonomy Open
As autonomous systems are being developed in multiple industries it has been recognized that a phased approach is needed both for technical development and user acceptance. Partially in response, the automotive and aircraft industries have…
View article: A joint effort to discover and characterize two resonant mini-Neptunes around TOI-1803 with TESS, HARPS-N, and CHEOPS
A joint effort to discover and characterize two resonant mini-Neptunes around TOI-1803 with TESS, HARPS-N, and CHEOPS Open
Context. The discovery and characterization of mini-Neptunes hold a potentially crucial impact on planetary formation and evolution theories. Estimating their orbital parameters and atmospheric properties would provide valuable hints to im…
View article: A New Electron and Proton Radiation Belt Identified by CIRBE/REPTile‐2 Measurements After the Magnetic Super Storm of 10 May 2024
A New Electron and Proton Radiation Belt Identified by CIRBE/REPTile‐2 Measurements After the Magnetic Super Storm of 10 May 2024 Open
Following the largest magnetic storm in 20 years (10 May 2024), REPTile‐2 on NASA's CIRBE satellite identified two new radiation belts containing 1.3–5 MeV electrons around L = 2.5–3.5 and 6.8–20 MeV protons around L = 2. The region around…
View article: Dynamic Spectra associated with the paper "Transient Blurring of the Scintillation Arc of Pulsar B1737+13"
Dynamic Spectra associated with the paper "Transient Blurring of the Scintillation Arc of Pulsar B1737+13" Open
contents of the 0README file (as of 2025-02-26) This is a very basic documentation file for the dynamic spectrum repositorythat we have created to accompany the publication of our paper "Transient Blurring of the Scintillation Arc of Pulsa…
View article: The effects of plasma source on adiabatic electron acceleration at dipolarization fronts
The effects of plasma source on adiabatic electron acceleration at dipolarization fronts Open
Particle acceleration is a commonly observed phenomenon at dipolarization fronts. Many studies have attempted to determine the acceleration mechanism, with betatron acceleration being a major candidate. In previous work, we attempted to ma…
View article: A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS
A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS Open
We present the discovery of two mini Neptunes near a 2:1 orbital resonance configuration orbiting the K0 star TOI-1803. We describe their orbital architecture in detail and suggest some possible formation and evolution scenarios. Using CHE…
View article: Earth‐Based Transmitters Trigger Precipitation of Inner Radiation Belt Electrons: Unveiling Observations and Modeling Results
Earth‐Based Transmitters Trigger Precipitation of Inner Radiation Belt Electrons: Unveiling Observations and Modeling Results Open
Human activity influence Earth's environment, including the space environment hundreds to thousands of kilometers above the Earth. One direct evidence is that the 19.8 kHz electromagnetic signals launched by the North West Cape (NWC) trans…
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: First Solar Orbiter observation of a dark halo in the solar atmosphere
First Solar Orbiter observation of a dark halo in the solar atmosphere Open
Solar active regions (ARs) are often surrounded by dark large areas of reduced emission compared to the quiet Sun, observed at various wavelengths corresponding to the chromosphere, transition region (TR), and corona, known as dark halos (…
View article: A multi-satellite survey scheme for addressing open questions on the Earth’s outer radiation belt dynamics
A multi-satellite survey scheme for addressing open questions on the Earth’s outer radiation belt dynamics Open
The Earth's outer radiation belt is highly dynamic, containing relativistic electron fluxes that can increase by several orders of magnitude during magnetospheric disturbances. This greatly increases the likelihood of spacecraft malfunctio…
View article: Characteristics of plasma boundaries with large density gradients and their effects on Kelvin–Helmholtz instability
Characteristics of plasma boundaries with large density gradients and their effects on Kelvin–Helmholtz instability Open
Boundaries between space plasmas occur in numerous contexts and scales, from astrophysical jets to planetary magnetospheres. Mass and momentum transport across boundaries poses a fundamental problem in magnetospheric physics. Kelvin–Helmho…
View article: CORBES: Radiation belt survey with international small satellite constellation
CORBES: Radiation belt survey with international small satellite constellation Open
The COnstellation of Radiation BElt Survey program (CORBES) is designed to deploy small satellites into a highly elliptic orbit for multi-point exploration of the Earth's radiation belts. Its scientific objective is to achieve unprecedente…
View article: Genome-wide profiling of highly similar paralogous genes using HiFi sequencing
Genome-wide profiling of highly similar paralogous genes using HiFi sequencing Open
Variant calling is hindered in segmental duplications by sequence homology. We developed Paraphase, a HiFi-based informatics method that resolves highly similar genes by phasing all haplotypes of a gene family. We applied Paraphase to 160 …
View article: Observations and Analysis of MeV Electrons from REPT PHA Data and REPTile-2 data 
Observations and Analysis of MeV Electrons from REPT PHA Data and REPTile-2 data  Open
The Relativistic Electron-Proton Telescope (REPT) Pulse Height Analysis (PHA) data captures individual particle event for each of REPT’s nine silicon detectors onboard the Van Allen Probes. The PHA data set was taken every 12 millise…
View article: Fine Structure of Magnetospheric Magnetosonic Waves: 1. Elementary Rising‐Tone Emissions Within Individual Harmonic
Fine Structure of Magnetospheric Magnetosonic Waves: 1. Elementary Rising‐Tone Emissions Within Individual Harmonic Open
The present study uncovers the fine structures of magnetosonic waves by investigating the EFW waveforms measured by Van Allen Probes. We show that each harmonic of the magnetosonic wave may consist of a series of elementary rising‐tone emi…
View article: Hot plasma and energetic particles in the earth's outer magnetosphere: new understandings during the IMS
Hot plasma and energetic particles in the earth's outer magnetosphere: new understandings during the IMS Open
In this paper we review the major accomplishments made during the IMS period in clarifying magnetospheric particle variations in the region from roughly geostationary orbit altitudes into the deep magnetotail. We divide our review into thr…
View article: First Results From REPTile‐2 Measurements Onboard CIRBE
First Results From REPTile‐2 Measurements Onboard CIRBE Open
CIRBE (Colorado Inner Radiation Belt Experiment), a 3U CubeSat, was launched on 15 April 2023 into a sun synchronous orbit (97.4° inclination and 509 km altitude). The sole science payload onboard is REPTile‐2 (Relativistic Electron and Pr…
View article: Observations of Relativistic Electron Enhancement and Butterfly Pitch Angle Distributions at Low <i>L</i> (<3)
Observations of Relativistic Electron Enhancement and Butterfly Pitch Angle Distributions at Low <i>L</i> (<3) Open
Electrons in Earth's outer radiation belt are highly dynamic, with fluxes changing by up to orders of magnitude. The penetration of electrons from the outer belt to the inner belt is one such change observed during geomagnetic storms and w…