Results 41 to 50 of about 140,689 (193)

Neutral Wind Control of Jupiter's Non‐Auroral Ionosphere

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We use JAMMIES (JAMMIES is Another Model Making Ionospheric EStimates), a new model of Jupiter's non‐auroral ionosphere, to demonstrate that neutral wind‐driven field‐aligned plasma transport can explain decades of measurements inconsistent with a solar‐dominated ionosphere. Two observations highlight these inconsistencies: a minimum in H3+ ${\
K. Mohamed, O. Agiwal, L. Moore, I. Mueller‐Wodarg, J. D. Huba, C. Martinis, T. Stallard, H. Melin   +7 more
wiley   +1 more source

Astrometric CCD observations of the inner Jovian satellites in 1999-2000

, 2001
This paper presents the results of observations of the inner Jovian satellites Thebe, Amalthea, Adrastea and Metis made in October–November 1999 and in November 2000.
Karpov, N., A. Sergeev, Kulyk, I., Sergeev, A., N. Karpov, I. Kulyk, K. Jockers, Jockers, K.   +7 more
core   +1 more source

New Electron Population Trapped at Low Latitudes Near Jupiter

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract We report observations of a low energy (<2 keV), trapped electron population near Jupiter's magnetic equator made by the Jovian Auroral Distributions Experiment (JADE) on Juno. Electron intensity peaks around the location of the minimum magnetic field magnitude along the field line that is connected to Juno.
F. Allegrini, P. Kollman, R. W. Ebert, J. R. Szalay, G. Clark, P. Louarn, D. J. McComas, P. Valek, S. J. Bolton   +8 more
wiley   +1 more source

Jupiter’s Metastable Companions

The Astrophysical Journal Letters
Jovian co-orbitals share Jupiter’s orbit and exhibit 1:1 mean-motion resonance with the planet. This includes >10,000 so-called Trojan asteroids surrounding the leading (L4) and trailing (L5) Lagrange points, viewed as stable groups dating back to planet
Sarah Greenstreet, Brett Gladman, Mario Jurić   +2 more
doaj   +1 more source

Investigating Galactic Cosmic Ray Ionization’s Contribution to Aerosol Formation on Neptune and a Potential Link to the Relationship Between Brightness and Solar Activity

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract In this work we investigate how ionization from Galactic Cosmic Rays (GCRs) can affect aerosol nucleation on Neptune and discuss potential implications for the observed brightness variations that appear to follow the solar cycle. We calculate the planetary vertical cutoff rigidity for Neptune based on the O8 ${\mathrm{O}}_{8}$ magnetic field ...
Martin B. B. Enghoff, Paul N. Romani, John E. P. Connerney, John L. Jørgensen   +3 more
wiley   +1 more source

Photoevaporation of the Jovian circumplanetary disk [PDF]

, 2020
Context. The Galilean satellites are thought to have formed from a circumplanetary disk (CPD) surrounding Jupiter. When it reached a critical mass, Jupiter opened an annular gap in the solar protoplanetary disk that might have exposed the CPD to ...
Rab, Ch., Oberg, N., I. Kamp, Kamp, I.; id_orcid, N. Oberg, S. Cazaux, Ch. Rab, Cazaux, S.   +7 more
core   +1 more source

Clues to the Origin of Jovian Outer Irregular Satellites from Reflectance Spectra

The Planetary Science Journal
Visible/near-infrared narrowband spectroscopy (dispersion per element ∼ 6 Å) was obtained of the Jovian irregular satellites JVI Himalia, JVII Elara, JVIII Pasiphae, JIX Sinope, JX Lysithea, JXI Carme, JXII Ananke, and JXVII Callirrhoe in 2006, 2009, and
Faith Vilas, Amanda R. Hendrix
doaj   +1 more source

A Dynamic Auroral Ionospheric Density Profile Reveals a Planetary‐Scale Cavity at Jupiter

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Low‐altitude measurements above Jupiter's main auroras have shown the presence of persistent auroral density depletions. This low density regime strongly favors auroral acceleration by inertial Alfvén waves to explain the predominance of energetic (100–1,000 keV) broadband electron beams.
N. S. Kruegler, A. H. Sulaiman, S. S. Elliott   +2 more
wiley   +1 more source

A Possible Complication of Using the 4.14 μm Band to Assess D/H Ratios on Icy Bodies

The Astrophysical Journal Letters
Determining isotopic ratios on the surfaces of extraterrestrial objects can provide insight into their formation conditions and evolution. Recently, remote-sensing detections of the 4.14 μ m HDO absorption band have enabled astronomers to estimate the D ...
Mark J. Loeffler, Rebecca A. Carmack, Stephen C. Tegler   +2 more
doaj   +1 more source

Electron‐Driven Instabilities in Jupiter's Magnetodisc

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Thermal electrons in Jupiter's magnetodisc have been observed to be anisotropic with higher parallel temperature compared to perpendicular. In this work, we used previously‐derived electron properties (Sarkango et al., 2025, https://doi.org/10.1029/2025gl118209) to calculate electron β‖ ${\beta }_{\Vert }$ and compared the observed anisotropy ...
Y. Sarkango, A. H. Sulaiman, R. A. López, J. R. Szalay, R. Bandyopadhyay, F. Allegrini, R. W. Ebert, P. A. Damiano   +7 more
wiley   +1 more source