Results 61 to 70 of about 2,550 (207)

Ocean Worlds Maintained by Ocean Tidal Heat Expected on Several Uranian Moons

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract In recent NASA decadal surveys, detecting oceans among Uranus' moons has been identified as a research priority in future missions. Currently, the prevailing view in planetary science is that the likelihood of finding oceans is highest on the larger moons, Titania and Oberon, due to their higher integrals of radiogenic heat sources. This study
Robert H. Tyler
wiley   +1 more source

Replenishment of Methane in Titan’s Atmosphere by Intrusion-driven Thermal Destabilization of Methane Clathrate Hydrates

The Planetary Science Journal
Titan’s atmospheric methane requires replenishment due to photolysis-driven loss. We have modeled the destabilization of an upper layer of methane clathrate hydrates (MCH) containing some ammonia (NH _3 ) through thermal interaction with a warm ice ...
Ashley Gerard Davies, Mathieu Choukroun, Christophe Sotin, Tuan H. Vu, Elodie Gloesener   +4 more
doaj   +1 more source

Chandra Observation of an X-ray Flare at Saturn: Evidence for Direct Solar Control on Saturn's Disk X-ray Emissions [PDF]

, 2005
Saturn was observed by Chandra ACIS-S on 20 and 26-27 January 2004 for one full Saturn rotation (10.7 hr) at each epoch. We report here the first observation of an X-ray flare from Saturn's non-auroral (low-latitude) disk, which is seen in direct ...
Anil Bhardwaj, Bhardwaj A., G. Randall Gladstone, J. Hunter Waite, Jr., Ness J.-U., Peter G. Ford, Ronald F. Elsner, Thomas E. Cravens, Waite J. H., Jr.   +8 more
core   +2 more sources

A Specification Model of Saturn's Plasma Environment

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract We present the first empirical‐based specification model of Saturn's plasma environment based on the analysis of all publicly available plasma moment data sets derived using multiple techniques from Cassini observations made by the Cassini Plasma Spectrometer and the Radio and Plasma Wave Science instrument.
A. Kamran, Q. Nénon, F. L. Johansson, Y. Hao, A. Sicard, E. Roussos, K. Dialynas, P. Jiggens, F. Cipriani   +8 more
wiley   +1 more source

Coupling between corotation and Lindblad resonances in the elliptic planar three-body problem

, 2013
We investigate the dynamics of two satellites with masses $\mu_s$ and $\mu'_s$ orbiting a massive central planet in a common plane, near a first order mean motion resonance $m$+1:$m$ ($m$ integer).
Moutamid, Maryame El, Renner, Stéfan, Sicardy, Bruno   +2 more
core   +2 more sources

Detection of Negative Carbon and Oxygen Pickup Ions From Dust Orbiting Jupiter

Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.
Abstract We report on observations of negative carbon and oxygen pickup ions (PUIs) originating from dust orbiting Jupiter. The PUIs are observed at altitudes of a few thousand kilometers (∼4,800–10,200 km) above the 1‐bar level of Jupiter's atmosphere and up to ∼11,000–15,000 km from the equatorial plane, thus providing constraints on the location of ...
F. Allegrini, J. R. Szalay, D. J. McComas, R. W. Ebert, S. J. Bolton, G. Clark, J. E. P. Connerney, W. S. Kurth, P. Louarn, B. Mauk, A. Pontoni, J. Saur, P. Valek, J.‐Z. Wang, R. J. Wilson   +14 more
wiley   +1 more source

A Centroiding Algorithm for Point-source Trails

The Astronomical Journal
Astrometric measurements are significantly challenged by the relative motion between the point source and the telescope, primarily due to the difficulty in accurately determining the position of the point source at the mid-exposure moment.
Linpeng Wu, Qingfeng Zhang, Valéry Lainey, Nick Cooper, Nicolas Rambaux, Weiheng Zhu   +5 more
doaj   +1 more source

Constraints from deuterium on the formation of icy bodies in the Jovian system and beyond

, 2008
We consider the role of deuterium as a potential marker of location and ambient conditions during the formation of small bodies in our Solar system. We concentrate in particular on the formation of the regular icy satellites of Jupiter and the other ...
Alibert, Balsiger, Banfield, Bertaux, Biele, Bockelée-Morvan, Brown, Bézard, Canup, Canup, Coustenis, Dauphas, Deloule, Donahue, Drouart, Dubrulle, Eberhardt, Encrenaz, Encrenaz, Feuchtgruber, Gardner, Geiss, Hartmann, Hersant, Horner, Horner, Horner, Jewitt, Jonathan Horner, Jonathan I. Lunine, Krivov, Krüger, Krüger, Lellouch, Lubow, Lunine, Lécluse, Magni, Makalkin, Makrides, Marchis, Meier, Michel Blanc, Morbidelli, Mosqueira, Mousis, Mousis, Mousis, Mousis, Mousis, Mousis, Olivier Mousis, Pollack, Prinn, Richet, Ruden, Shakura, Sheppard, Yann Alibert   +58 more
core   +2 more sources

SATURN'S INNER SATELLITES: ORBITS, MASSES, AND THE CHAOTIC MOTION OF ATLAS FROM NEW CASSINI IMAGING OBSERVATIONS [PDF]

, 2014
We present numerically-derived orbits and mass estimates for the inner Saturnian satellites, Atlas, Prometheus, Pandora, Janus and Epimetheus from a fit to 2580 new Cassini ISS astrometric observations spanning February 2004 to August 2013.
Cooper, NJ, Evans, MW, Murray, CD, Renner, S   +3 more
core   +5 more sources

JWST/NIRSpec Detection of Complex Structures in Saturn's Sub‐Auroral Ionosphere and Stratosphere

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Past observations of Saturn's sub‐auroral ionosphere have provided no detailed longitudinal information, and variations in underlying stratospheric emission from methane fluorescence have never been resolved spatially. Here, we present the first near‐infrared observations of Saturn using JWST's NIRSpec‐IFU, revealing the 2.8–5.2 micron ...
Tom S. Stallard, Luke Moore, Henrik Melin, Omakshi Agiwal, M. Nahid Chowdhury, Rosie E. Johnson, Katie L. Knowles, Emma M. Thomas, Paola I. Tiranti, James O’Donoghue, Khalid Mohamed, Ingo Mueller‐Wodarg, Leigh Fletcher, Imke de Pater, Thierry Fouchet, Sarah V. Badman   +15 more
wiley   +1 more source