Results 31 to 40 of about 6,474 (200)

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

A semi-analytical model for exploring Galilean satellites formation from a massive disk

, 2015
A better knowledge of Jovian satellites' origins will bring light on the environment that surrounded Jupiter during its formation and can help us to understand the characteristics of this unique satellite system.
Ida, Shigeru, Miguel, Yamila
core   +1 more source

Delivery of Dust Particles from Protoplanetary Disks onto Circumplanetary Disks of Giant Planets

The Astrophysical Journal
The principal regular satellites of gas giants are thought to be formed by the accumulation of solid materials in circumplanetary disks (CPDs). While there has been significant progress in the study of satellite formation in CPDs, details of the supply ...
Natsuho Maeda, Keiji Ohtsuki, Ryo Suetsugu, Yuhito Shibaike, Takayuki Tanigawa, Masahiro N. Machida   +5 more
doaj   +1 more source

CCD positions for eight Jovian irregular satellites [PDF]

Astronomy & Astrophysics, 2006
The astrometric positions of eight irregular Jovian satellites are given for the oppositions of the planet from 1995 to 1999. These positions were measured on 204 CCD frames obtained at the Cassegrain focus of a 1.6 m reflector. They are compared with the theoretically calculated positions from JPL Development Ephemeris.
openaire   +1 more source

Thermal Segregation and Reddening in Europa's Double Ridges

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Europa's double ridges often display lower albedo and redder color than their surroundings. Their unique topography may cause sublimation‐driven darkening due to illumination and self‐heating—the process of thermal segregation. We apply an advanced 3D thermophysical model, including shadowing and self‐heating through mutual exchange of ...
Kya C. Sorli, Paul O. Hayne, Lucas Lange, Sylvain Piqueux   +3 more
wiley   +1 more source

Impact-Generated Dust Clouds Surrounding the Galilean Moons

, 2003
Tenuous dust clouds of Jupiter's Galilean moons Io, Europa, Ganymede and Callisto have been detected with the in-situ dust detector on board the Galileo spacecraft.
Grün, Eberhard, Harald~Krüger, Krivov, Alexander V., Sremčević, Miodrag   +3 more
core   +1 more source

Dawn–Dusk Asymmetry of the Io Plasma Torus Derived from Io’s Auroral Footprints Observed by Juno-UVS

The Planetary Science Journal
The Io plasma torus (IPT) is a dense plasma cloud that corotates around Jupiter near Io’s orbit. A dawn-to-dusk electric field shifts the IPT dawnward.
Shinnosuke Satoh, Vincent Hue, Fuminori Tsuchiya, Shotaro Sakai, Yasumasa Kasaba, Hajime Kita, Masato Kagitani, Alessandro Moirano, Bertrand Bonfond, Hiroaki Misawa, Rikuto Yasuda   +10 more
doaj   +1 more source

Wanted: An International Jovian-Satellite-Phenomenon Centre [PDF]

International Astronomical Union Colloquium, 1988
AbstractAmateur observations made since 1977 show that although the ephemerides for the satellites of Jupiter published by the Jet Propulsion Laboratory are more accurate than those in the Astronomical Almanac, there are still small deviations, which may increase with time.
openaire   +1 more source

Reconnection Preferentially Accelerates Light Ions at Ganymede's Magnetopause

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Juno's flyby of Ganymede revealed ion composition in its vicinity with the Jovian Auroral Distributions Experiment–Ion (JADE‐I) instrument. Throughout this flyby, we derive species‐resolved ion density and velocity moments by decomposing the time‐of‐flight data into contributions from individual ion species using species‐dependent fits. At the
T. W. Oberg, J. R. Szalay, F. Allegrini, R. W. Ebert, S. P. Ellis, D. J. McComas, S. R. Carberry Mogan, P. W. Valek   +7 more
wiley   +1 more source

Growth and evolution of satellites in a Jovian massive disc

, 2017
The formation of satellite systems in circum-planetary discs is considered to be similar to the formation of rocky planets in a proto-planetary disc, especially Super-Earths.
Kley, Wilhelm, Moraes, Ricardo A, Neto, Ernesto Vieira   +2 more
core   +1 more source