74 citations · 331 across the 21 of their papers we have counts for
22 papers
Tracing the source of carbon oxides on the large moons of Uranus
Richard J. Cartwright, Sasha Cryan, Rosario Brunetto +15
The Uranian moons Ariel, Umbriel, Titania, and Oberon are enriched in CO2 mixed with CO, but the origin(s) of these carbon oxides, be they primarily native or radiolytic, remains u…
LEAP: A Rapid Neural Surrogate of Multi-Fluid MHD at Europa
Sachin Alexander Reddy, Abigail R. Azari, Corey J. Cochrane +6
Characterizing Europa's subsurface ocean is a key objective of the Europa Clipper and JUICE missions in the search for life beyond Earth. Although the ocean's induced magnetic fiel…
Universal energy limits of radiation belts in planetary and brown dwarf magnetospheric systems
Drew L. Turner, Savvas Raptis, Adnane Osmane +5
Radiation belts are regions of magnetically trapped particle radiation found around all of the sufficiently magnetized planets in the Solar System and recently also observed around…
Laboratory Investigation of CO2-Driven Enhancement of Radiolytic H2O2 on Europa and Other Icy Moons
Bereket D. Mamo, Ujjwal Raut, Ben D. Teolis +5
Observations of Europa's leading hemisphere reveal elevated H2O2 in the warmer, low latitude chaos terrains compared to the colder, polar regions. This distribution disagrees with…
Fluorescent Biomolecules Detectable in Near-Surface Ice on Europa
Gideon Yoffe, Keren Duer, Tom Andre Nordheim +2
Europa, Jupiter's second Galilean moon, is believed to host a subsurface ocean in contact with a rocky mantle, where hydrothermal activity may drive the synthesis of organic molecu…
JWST Reveals Spectral Tracers of Recent Surface Modification on Europa
Richard J. Cartwright, Charles A. Hibbits, Bryan J. Holler +9
Europa has been modified by a variety of geologic processes, exposing internally-derived materials that are heavily irradiated by charged particles trapped in Jupiter's magnetosphe…
Revealing Callisto's carbon-rich surface and CO2 atmosphere with JWST
Richard J. Cartwright, Geronimo L. Villanueva, Bryan J. Holler +18
We analyzed spectral cubes of Callisto's leading and trailing hemispheres, collected with the NIRSpec Integrated Field Unit (G395H) on the James Webb Space Telescope. These spatial…
Feasibility of Passive Sounding of Uranian Moons using Uranian Kilometric Radiation
Andrew Romero-Wolf, Gregor Steinbruegge, Julie Castillo-Rogez +6
We present a feasibility study for passive sounding of Uranian icy moons using Uranian Kilometric Radio (UKR) emissions in the 100 - 900 kHz band. We provide a summary description…
Exploring Fundamental Particle Acceleration and Loss Processes in Heliophysics through an Orbiting X-ray Instrument in the Jovian System
W. Dunn, G. Berland, E. Roussos +41
Jupiter's magnetosphere is considered to be the most powerful particle accelerator in the Solar System, accelerating electrons from eV to 70 MeV and ions to GeV energies. How elect…
Detection of HCN and diverse redox chemistry in the plume of Enceladus
Jonah S. Peter, Tom A. Nordheim, Kevin P. Hand
The Cassini spacecraft observed that Saturn's moon Enceladus possesses a series of jets erupting from its South Polar Terrain. Previous studies of in situ data collected by Cassini…
Hypotheses for Triton's Plumes: New Analyses and Future Remote Sensing Tests
Jason D. Hofgartner, Samuel P. D. Birch, Julie Castillo +14
At least two active plumes were observed on Neptune's moon Triton during the Voyager 2 flyby in 1989. Models for Triton's plumes have previously been grouped into five hypotheses,…
A CO2 cycle on Ariel? Radiolytic production and migration to low latitude cold traps
Richard J. Cartwright, Tom A. Nordheim, David DeColibus +11
CO2 ice is present on the trailing hemisphere of Ariel but is mostly absent from its leading hemisphere. The leading/trailing hemispherical asymmetry in the distribution of CO2 ice…
In Search of Subsurface Oceans within the Uranian Moons
C. J. Cochrane, S. D. Vance, T. A. Nordheim +3
The Galileo mission to Jupiter discovered magnetic signatures associated with hidden sub-surface oceans at the moons Europa and Callisto using the phenomenon of magnetic induction.…
Evidence for sulfur-bearing species on Callisto's leading hemisphere: Sourced from Jupiter's irregular satellites or Io?
Richard J. Cartwright, Tom A. Nordheim, Dale P. Cruikshank +5
We investigated whether sulfur-bearing species are present on the icy Galilean moon Callisto by analyzing eight near-infrared reflectance spectra collected over a wide range of sub…
Evidence for ammonia-bearing species on the Uranian satellite Ariel supports recent geologic activity
Richard J. Cartwright, Chloe B. Beddingfield, Tom A. Nordheim +6
We investigated whether ammonia-rich constituents are present on the surface of the Uranian moon Ariel by analyzing 32 near-infrared reflectance spectra collected over a wide range…
Revisiting the cosmic-ray induced Venusian radiation dose in the context of habitability
Konstantin Herbst, Saša Banjac, Dimitra Atri +1
The Atmospheric Radiation Interaction Simulator (AtRIS) was used to model the altitude-dependent Venusian absorbed dose and the Venusian dose equivalent. For the first time, we mod…
Surface composition and properties of Ganymede: Updates from ground-based observations with the near-infrared imaging spectrometer SINFONI/VLT/ESO
N. Ligier, C. Paranicas, J. Carter +5
Ganymede's surface exhibits great geological diversity, with old dark terrains, expressed through the surface composition, which is known to be dominated by two constituents: H2O-i…
The in-situ exploration of Jupiter's radiation belts (A White Paper submitted in response to ESA's Voyage 2050 Call)
Elias Roussos, Oliver Allanson, Nicolas André +26
Jupiter has the most energetic and complex radiation belts in our solar system. Their hazardous environment is the reason why so many spacecraft avoid rather than investigate them,…
Atmospheric Electricity at the Ice Giants
K. L. Aplin, G. Fischer, T. A. Nordheim +3
Lightning was detected by Voyager 2 at Uranus and Neptune, and weaker electrical processes also occur throughout planetary atmospheres from galactic cosmic ray (GCR) ionisation. Li…
The origin and fate of O in Europa's ice: an atmospheric perspective
Robert E. Johnson, Apurva V. Oza, Francois Leblanc +2
The early prediction and subsequent detection of an O atmosphere on Europa, coupled with the discovery that Europa has an ocean under its ice mantle, has made this moon a prime…
Solar System Ice Giants: Exoplanets in our Backyard
Abigail Rymer, Kathleen Mandt, Dana Hurley +110
Future remote sensing of exoplanets will be enhanced by a thorough investigation of our solar system Ice Giants (Neptune-size planets). What can the configuration of the magnetic f…
Cassini CAPS identification of pickup ion compositions at Rhea
R. T. Desai, S. A. Taylor, L. H. Regoli +9
Saturn's largest icy moon, Rhea, hosts a tenuous surface-sputtered exosphere composed primarily of molecular oxygen and carbon dioxide. In this Letter, we examine Cassini Plasma Sp…