Results 71 to 80 of about 723,831 (225)

Phoebe's orbit from ground-based and space-based observations [PDF]

open access: yes, 2013
The ephemeris of Phoebe, the ninth satellite of Saturn, is not very accurate. Previous dynamical models were usually too simplified, the astrometry is heterogeneous and, the Saturn's ephemeris itself is an additionnal source of error.
Desmars, Josselin   +4 more
core   +4 more sources

Constraining Time Variations in Enceladus’s Water-vapor Plume with Near-infrared Spectra from Cassini’s Visual and Infrared Mapping Spectrometer

open access: yesThe Planetary Science Journal
Water vapor produces a series of diagnostic emission lines in the near-infrared between 2.60 and 2.75 μ m. The Visual and Infrared Mapping Spectrometer (VIMS) on board the Cassini spacecraft detected this emission signal from Enceladus’s plume, and so ...
K. E. Denny   +4 more
doaj   +1 more source

Statistical Study on L‐O Mode Saturn Kilometric Radiation

open access: yesGeophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Based on the 13 years‐long observation of Saturn kilometric radiation (SKR) by the Cassini/Radio and Plasma Wave Science instrument, this study derives statistics for left‐hand (L‐O) mode SKR emissions. These emissions span a frequency range from below 10 kHz to approximately 1,000 kHz, with spectral flux densities ranging between 10−24 and 10−
Junhao Pan   +6 more
wiley   +1 more source

Revisiting Discrete Energy Bands in Galilean Moon's Footprint Tails: Remote Signals of Particle Absorption

open access: yesGeophysical Research Letters, Volume 52, Issue 14, 28 July 2025.
Abstract Observations from the Juno spacecraft near the M‐shells of the Galilean moons have identified alternating enhancements and reductions of particle fluxes at discrete energies. These banded structures were previously attributed to bounce resonance between particles and standing Alfvén waves generated by moon‐magnetospheric interactions. Here, we
Fan Yang   +13 more
wiley   +1 more source

Symmetric Instability in a Boussinesq Fluid on a Rotating Planet

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract Symmetric instability has broad applications in geophysical and planetary fluid dynamics. It plays a crucial role in the formation of mesoscale rainbands at mid‐latitudes on Earth, instability in the ocean's mixed layer, and slantwise convection on gas giants and icy moon oceans.
Yaoxuan Zeng, Malte F. Jansen
wiley   +1 more source

Modeling Jupiter's Dawnside Magnetodisc: Using Juno Observations to Constrain a Radial Force‐Balance Model

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract This study investigates Jupiter's dawnside magnetodisc, using plasma and magnetic field measurements from Juno orbits 5 to 12 to refine a radial force‐balance magnetodisc model. This iterative vector potential model examines variations in the azimuthal magnetodisc current, coupled with a magnetosphere‐ionosphere coupling model from which the ...
G. Provan   +4 more
wiley   +1 more source

Cassini Ring Seismology as a Probe of Saturn's Interior I: Rigid Rotation

open access: yes, 2018
Seismology of the gas giants holds the potential to resolve long-standing questions about their internal structure and rotation state. We construct a family of Saturn interior models constrained by the gravity field and compute their adiabatic mode ...
Fortney, Jonathan J.   +3 more
core   +1 more source

Water Transport from Enceladus to the Rings

open access: yesThe Planetary Science Journal
Enceladus continuously ejects approximately 300 kg s ^−1 of water vapor from its south polar regions, forming an extensive neutral gas torus around Saturn.
Ian-Lin Lai   +4 more
doaj   +1 more source

Impacts Into Titan's Methane‐Clathrate Crust as a Source of Atmospheric Methane

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Titan is the only icy satellite in the solar system with a dense atmosphere. This atmosphere is composed primarily of nitrogen with a few percent methane, which supports an active, methane‐based hydrological cycle on Titan. The presence of methane, however, is intriguing, as its lifetime is likely much shorter than the age of the solar system ...
S. Wakita   +7 more
wiley   +1 more source

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