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11 transient bright flashes were detected in Jupiter's atmosphere using the UVS instrument on the Juno spacecraft. These bright flashes are only observed in a single spin of the spacecraft and their brightness decays exponentially with…

We report observations of stripe-like features in Enceladus' plumes captured simultaneously by Cassini's VIMS-IR and ISS NAC instruments during flyby E17, with similar patterns seen in VIMS-IR data from flyby E13 and E19. These parallel…

Seismology allows for direct observational constraints on the interior structures of stars and planets. Recent observations of Saturn's ring system have revealed the presence of density waves within the rings excited by oscillation modes…

Earth and Planetary Astrophysics · Physics 2015-04-30 Jim Fuller

During the Cassini spacecraft's flyby of Jupiter (October, 2000-March, 2001), the Ultraviolet Imaging Spectrograph (UVIS) produced an extensive dataset consisting of 3,349 spectrally dispersed images of the Io plasma torus. Here we present…

Solar and Stellar Astrophysics · Physics 2013-01-17 Andrew J. Steffl , A. Ian F. Stewart , Fran Bagenal

The thermal inertia values of Saturn's main rings (the A, B, and C rings and the Cassini division) are derived by applying our thermal model to azimuthally scanned spectra taken by the Cassini Composite Infrared Spectrometer (CIRS). Model…

Earth and Planetary Astrophysics · Physics 2015-06-11 Ryuji Morishima , Linda Spilker , Keiji Ohtsuki

We provide measurements of the absolute reflectivity of Jupiter and Saturn along their central meridians in filters covering a wide range of visible and near-infrared wavelengths (from 0.38 to 1.7 $\mu$m) that are not often presented in the…

Earth and Planetary Astrophysics · Physics 2017-09-29 I. Mendikoa , A. Sánchez-Lavega , S. Pérez-Hoyos , R. Hueso , J. F. Rojas , J. López-Santiago

The detection of outgassing water vapor from Enceladus is one of the great breakthroughs of the Cassini mission. The fate of this water once ionized has been widely studied; here we investigate the effects of purely neutral-neutral…

Astrophysics · Physics 2015-05-13 Alison J. Farmer

Recently, several new solar radio telescopes have been put into operation and provided spectral-imaging observations with much higher resolutions in decimeter (dm) and centimeter (cm) wavelengths. These telescopes include the Mingantu…

Solar and Stellar Astrophysics · Physics 2023-11-27 Baolin Tan , Yihua Yan , Jing Huang , Yin Zhang , Chengming Tan , Xiaoshuai Zhu

The Phoebe ring, Saturn's largest and faintest ring, lies far beyond the planet's well-known main rings. It is primarily sourced by collisions with Saturn's largest irregular satellite Phoebe, perhaps through stochastic macroscopic…

Earth and Planetary Astrophysics · Physics 2015-06-18 Daniel Tamayo , Matthew M. Hedman , Joseph A. Burns

The accurate determination of Saturn's gravitational coefficients by Cassini could provide tighter constrains on Saturn's internal structure. Also, occultation measurements provide important information on the planetary shape which is often…

Earth and Planetary Astrophysics · Physics 2015-06-15 Ravit Helled , Tristan Guillot

We describe a search for dust created in collisions between the Saturnian irregular satellites using archival \emph{Spitzer} MIPS observations. Although we detected a degree scale Saturn-centric excess that might be attributed to an…

Earth and Planetary Astrophysics · Physics 2013-11-07 Grant M. Kennedy , Mark C. Wyatt , Kate Y. L. Su , John A. Stansberry

Every 19 years, Saturn passes through Jupiter's 'flapping' magnetotail. Here, we report Chandra X-ray observations of Saturn planned to coincide with this rare planetary alignment and to analyse Saturn's magnetospheric response when…

Earth and Planetary Astrophysics · Physics 2021-07-14 D. M. Weigt , W. R. Dunn , C. M. Jackman , R. Kraft , G. Branduardi-Raymont , J. D. Nichols , A. D. Wibisono , M. F. Vogt , G. R. Gladstone

With the advent of direct imaging spectroscopy, the number of spectra from brown dwarfs and extrasolar gas giants is growing rapidly. Many brown dwarfs and extrasolar gas giants exhibit spectroscopic and photometric variability, which is…

Earth and Planetary Astrophysics · Physics 2022-11-16 Daniel J. Coulter , Jason W. Barnes , Jonathan J. Fortney

The alignment of Saturn's magnetic pole with its rotation axis precludes the use of magnetic field measurements to determine its rotation period. The period was previously determined from radio measurements by the Voyager spacecraft to be…

Earth and Planetary Astrophysics · Physics 2015-06-24 Ravit Helled , Eli Galanti , Yohai Kaspi

The hope is that in the near future neutrino astronomy, born with the identification of thermonuclear fusion in the sun and the particle processes controlling the fate of a nearby supernova, will reach throughout and beyond our Galaxy and…

Astrophysics · Physics 2009-10-28 S. Barwick , F. Halzen , P. B. Price

Far-IR 16-1000 $\mu$m spectra of Saturn's hydrogen-helium continuum measured by Cassini's Composite Infrared Spectrometer (CIRS) are inverted to construct a near-continuous record of upper tropospheric (70-700 mbar) temperatures and…

Earth and Planetary Astrophysics · Physics 2015-10-14 Leigh N. Fletcher , Patrick G. J. Irwin , Richard K. Achterberg , Glenn S. Orton , F. Michael Flasar

The observation of gaseous giant planets is of high scientific interest. Although they have been the targets of several spacecraft missions, there still remains a need for continuous ground-based observations. As their atmospheres present…

During thunderstorms, the atmospheric electric field can increase above hundreds of kV/m, causing an acceleration in the charged particles of secondary cosmic rays. Such an acceleration causes avalanche processes in the atmosphere,…

Atmospheric and Oceanic Physics · Physics 2022-05-03 J. Peña-Rodríguez , P. Salgado-Meza , L. Flórez-Villegas , L. A. Núñez

Predictions for the acoustic attenuation coefficient and phase speed as functions of frequency and altitude in Saturn's atmosphere are presented and discussed. The pressure range considered in the study is 1 mbar to 1 bar, in windless and…

Earth and Planetary Astrophysics · Physics 2025-07-15 Andrew Powell , Andi Petculescu , Rishbash Chaudhary , Robert White , Don Banfield , Ian Neeson