Results 51 to 60 of about 9,371 (210)

Geophysical tests for habitability in ice-covered ocean worlds [PDF]

, 2017
Geophysical measurements can reveal the structure of icy ocean worlds and cycling of volatiles. The associated density, temperature, sound speed, and electrical conductivity of such worlds thus characterizes their habitability. To explore the variability
Anderson, Anderson, Anderson, Andersson, Bell, Beuthe, Bland, Bland, Béghin, Cammarano, Cammarano, Carlson, Castillo-Rogez, Chen, Choblet, Choukroun, Choukroun, Choukroun, Christensen, Collins, Connolly, Connolly, Darot, Deschamps, Dumoulin, Durham, Fortes, Fortes, Gagnon, Gagnon, Gao, Glein, Goldsby, Gomi, Grasset, Grima, Grindrod, Hammond, Han, Hand, Helffrich, Hemingway, Hogenboom, Holland, Howett, Hsu, Huang, Iess, Iess, Isaak, Jacobson, Journaux, Journaux, Kalousová, Kamata, Kamata, Karato, Kern, Kite, Kivelson, Klotz, Kozlovsky, Larionov, Lefevre, Mantegazzi, Marshall, Masters, Mazarico, McDougall, McKinnon, McKinnon, Millero, Mitri, Moore, Müntener, Panning, Park, Peacock, Postberg, Saito, Saito, Sanloup, Schmidt, Schubert, Shaw, Shock, Sohl, Steinbrügge, Stixrude, Stähler, Takeuchi, Thomas, Thomas, Tillner-Roth, Tobie, Todd, Tutolo, Ulmer, Van Hoolst, Vance, Vance, Vance, Vance, Vance, Vance, Vitovtova, Vogt, Voronov, Wahr, Waite, Wang, Wang, Wyllie, Xu, Yoshino, Yu, Zhao, Zolotov, Ćuk   +118 more
core   +4 more sources

On the Detection of Low‐Frequency Planetary Radio Emission With an Orbiting Interferometer

Radio Science, Volume 61, Issue 6, June 2026.
Abstract The magnetized planets of the outer Solar System produce kilometric radio emissions at very low frequencies (<1 ${< } 1\,$MHz). They reveal the planetary magnetic dynamics and their interaction with the solar wind. Those radio emissions can also serve as a proxy for interplanetary space weather monitoring.
E. Rouillé, B. Cecconi, B. Segret, J. N. Girard, A. Loh   +4 more
wiley   +1 more source

Ocean dynamics of outer solar system satellites

, 2019
Ocean worlds are prevalent in the solar system. Focusing on Enceladus, Titan, Europa, and Ganymede, I use rotating convection theory and numerical simulations to predict ocean currents and the potential for ice-ocean coupling.
Soderlund, Krista
core   +1 more source

Analysis of Close Encounters With Ganymede and Callisto Using a Genetic n-Body Algorithm

Frontiers in Astronomy and Space Sciences, 2018
In this work we describe a genetic algorithm which is used in order to study orbits of minor bodies in the frames of close encounters. We find that the algorithm in combination with standard orbital numerical integrators can be used as a good proxy for ...
Philip M. Winter, Mattia A. Galiazzo, Thomas I. Maindl   +2 more
doaj   +1 more source

Forward and Adjoint Calculations of Gravitational Potential in Heterogeneous, Aspherical Planets

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We have developed a computational package for the calculation of numerically exact internal and external gravitational potential, its functional derivatives and sensitivity kernels, in an aspherical, heterogeneous planet. We detail our implementation, utilizing a transformation of the Poisson equation into a spherical reference domain, as well
Alex D. C. Myhill, Matthew A. Maitra, David Al‐Attar   +2 more
wiley   +1 more source

Backscattering of Ions Impacting Ganymede’s Surface as a Source for Energetic Neutral Atoms

The Astrophysical Journal Letters
Jupiter’s largest moon Ganymede has its own intrinsic magnetic field, which forms a magnetosphere that is embedded within Jupiter’s corotating magnetospheric plasma.
Paul S. Szabo, Andrew R. Poppe, Andreas Mutzke, Lucas Liuzzo, Shane R. Carberry Mogan   +4 more
doaj   +1 more source

A Primordial Origin of the Laplace Relation Among the Galilean Satellites

, 2002
Understanding the origin of the orbital resonances of the Galilean satellites of Jupiter will constrain the longevity of the extensive volcanism on Io, may explain a liquid ocean on Europa, and may guide studies of the dissipative properties of stars and
Lee, Man Hoi, Peale, S. J.
core   +2 more sources

Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling, Joachim Saur, Darrell Strobel, Philippa Molyneux, Jamey R. Szalay, Thomas K. Greathouse   +5 more
wiley   +1 more source

Instrumentation for Detecting Sulphur Isotopes as Biosignatures on Europa and Ganymede by Forthcoming Missions

Universe, 2022
There has been remarkable progress in identifying a certain type of biosignature, both from the point of view of the payloads of forthcoming missions, and from the point of view of biogeochemistry.
Julian Chela-Flores
doaj   +1 more source

Surface charging of thick porous water ice layers relevant for ion sputtering experiments [PDF]

, 2016
We use a laboratory facility to study the sputtering properties of centimeter-thick porous water ice subjected to the bombardment of ions and electrons to better understand the formation of exospheres of the icy moons of Jupiter.
Brouet, Y., Galli, A., Jost, B., Poch, O., Pommerol, A., Thomas, N., Tulej, M., Vorburger, A., Wurz, P.   +8 more
core   +2 more sources