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The era of outer planet orbiters (Galileo, Juno and Cassini) is advancing our understanding of how the radiation belts of Jupiter and Saturn are structured, form and evolve well beyond what had been possible during the age of flyby missions…

Earth and Planetary Astrophysics · Physics 2021-09-15 Elias Roussos , Peter Kollmann

Since 2004, the images obtained by Cassini spacecraft's on-board cameras have revealed the existence of several small satellites in the Saturn system. Some of these small satellites are embedded in arcs of particles. While these satellites…

Earth and Planetary Astrophysics · Physics 2016-06-17 N. C. S. Araujo , E. Vieira Neto , D. W. Foryta

The co-orbital satellites of Saturn, Janus and Epimetheus, swap radial positions every 4.0 years. Since \textit{Cassini} has been in orbit about Saturn, this has occurred on 21 January in 2006, 2010, and 2014. We describe the effects of…

Earth and Planetary Astrophysics · Physics 2016-07-19 Morgan E. Rehnberg , Larry W. Esposito , Zarah L. Brown , Nicole Albers , Miodrag Sremčević , Glen R. Stewart

Since 2004, Saturn Electrostatic Discharges (SEDs), which are the radio signatures of lightning in Saturn's atmosphere, have been observed by the Cassini Radio and Plasma Wave Science instrument (RPWS). Despite their important time…

Earth and Planetary Astrophysics · Physics 2010-11-08 Marc Delcroix , Georg Fischer

The origin of rings around giant planets remains elusive. Saturn's rings are massive and made of 90-95% of water ice. In contrast, the much less massive rings of Uranus and Neptune are dark and likely to have higher rock fraction. Here we…

Earth and Planetary Astrophysics · Physics 2016-11-15 Ryuki Hyodo , Sébastien Charnoz , Keiji Ohtsuki , Hidenori Genda

The spectral position of the 3.6 micron continuum peak measured on Cassini-VIMS I/F spectra is used as a marker to infer the temperature of the regolith particles covering the surfaces of Saturn's icy satellites. This feature is…

Stellar oscillations give seismic information on the internal properties of stars. Red giants are targets of interest since they present mixed modes, which behave as pressure modes in the convective envelope and as gravity modes in the…

Solar and Stellar Astrophysics · Physics 2017-11-08 Charlotte Gehan , Benoît Mosser , Eric Michel

The distinctive set of Saturnian small satellites, Aegaeon, Methone, Anthe, and Pallene, constitutes an excellent laboratory to understand the evolution of systems immersed in co-orbital dusty rings/arcs, subjected to perturbations from…

Throughout 2017, the Hubble Space Telescope (HST) observed the northern far-ultraviolet aurorae of Saturn at northern solstice, during the Cassini Grand Finale. These conditions provided a complete viewing of the northern auroral region…

Earth and Planetary Astrophysics · Physics 2018-08-27 L. Lamy , R. Prangé , C. Tao , T. Kim , S. V. Badman , P. Zarka , B. Cecconi , W. S. Kurth , W. Pryor , E. Bunce , A. Radioti

Saturn's geometric magnitude and albedo were determined by Mallama et al. (2017, Icarus 282, 19-33). That analysis depended largely on photometric data obtained when the ring system interfered with observations of the globe. In this study…

Earth and Planetary Astrophysics · Physics 2017-01-03 Anthony Mallama , Hristo Pavlov

Tidal interactions between Saturn and its satellites play a crucial role in both the orbital migration of the satellites and the heating of their interiors. Therefore constraining the tidal dissipation of Saturn (here the ratio k2/Q) opens…

Earth and Planetary Astrophysics · Physics 2015-06-04 V. Lainey , Ö. Karatekin , J. Desmars , S. Charnoz , J-E. Arlot , N. Emelyanov , C. Le Poncin-Lafitte , S. Mathis , F. Remus , G. Tobie , J-P. Zahn

Saturn's diffuse E ring consists of many tiny (micron and sub-micron) grains of water ice distributed between the orbits of Mimas and Titan. Various gravitational and non-gravitational forces perturb these particles' orbits, causing the…

Earth and Planetary Astrophysics · Physics 2015-06-03 M. M. Hedman , J. A. Burns , D. P. Hamilton , M. R. Showalter

Using numerical integrations, we find that the orbital eccentricity of Saturn's moon Iapetus undergoes prominent multi-Myr oscillations. We identify the responsible resonant argument to be $\varpi-\varpi_{g5}+\Omega-\Omega_{eq}$, with the…

Earth and Planetary Astrophysics · Physics 2018-10-24 Matija Ćuk , Luke Dones , David Nesvorný , Kevin J. Walsh

The spatial wavelet spectra of 73 published spiral galaxies's rotation curves are computed and their associated scaleograms are presented. Scaleograms are used to detect and isolate local features observed in spiral galaxies's rotation…

General Physics · Physics 2011-05-06 M. Kuassivi

To explore the formation and properties of Saturn's G ring, we study the dynamics of micron-sized dust particles originating from the arc of debris near the inner edge of the ring. The dynamical evolution of particles due to various…

Earth and Planetary Astrophysics · Physics 2025-07-22 Zhenghan Chen , Xiaodong Liu , Kun Yang

We examine Saturn's atmosphere with observations from ground-based telescopes and Hubble Space Telescope (HST). We present a detailed analysis of observations acquired during 2018. A system of polar storms that appeared in the planet in…

Aegaeon, Methone, Anthe, and Pallene are four Saturnian small moons, discovered by the Cassini spacecraft. Although their orbital characterization has been carried on by a number of authors, their long-term evolution has not been studied in…

Earth and Planetary Astrophysics · Physics 2017-08-02 Marco A. Muñoz-Gutiérrez , Silvia Giuliatti Winter

Small (~50km scale), irregular features seen in Cassini images to be emanating from Saturn's F ring have been termed mini-jets by Attree et al. (2012). One particular mini-jet was tracked over half an orbital period, revealing its evolution…

Earth and Planetary Astrophysics · Physics 2017-12-21 Nicholas O. Attree , Carl D. Murray , Gareth A. Williams , Nicholas J. Cooper

We present the results of the two most recent (2005) XMM-Newton observations of Saturn together with the re-analysis of an earlier (2002) observation from the XMM-Newton archive and of three Chandra observations in 2003 and 2004. While the…

Earth and Planetary Astrophysics · Physics 2015-05-14 G. Branduardi-Raymont , A. Bhardwaj , R. F. Elsner , P. Rodriguez

The Cassini cameras have captured the opposition effect in Saturn rings with a high radial resolution at phase angles down to 0.01o in the entire main ring system. We derive phase functions from 0.01 to 25 degrees of phase angle in the…

Earth and Planetary Astrophysics · Physics 2009-02-03 Estelle Deau , Sebastien Charnoz , Luke Dones , Andre Brahic , Carolyn C. Porco