Results 51 to 60 of about 129,106 (151)

The Dynamic Inducing Magnetic Field Signal at Triton

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Triton, Neptune's largest moon, is suspected of harboring a subsurface ocean. Detecting sub‐surface oceans requires measuring the ocean's induced magnetic field, typically exploiting common frequencies at which the field environment of the moon changes, in this case Triton's path through Neptune's magnetosphere.
L. Wivell, M. K. Dougherty, A. Masters
wiley   +1 more source

Galactic Cosmic Ray Ionization on Uranus; Geomagnetic Latitude Dependencies

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract Galactic Cosmic Rays (GCRs) are a major source of atmospheric ionization, influencing ion abundance, aerosol formation, and electrical processes. GCR‐induced effects are expected to be more pronounced on Uranus than planets closer to the Sun for two reasons; reduced solar irradiance, and weaker solar modulation of incident GCR.
Ola Al‐Khuraybi, Karen L. Aplin, Alberto Gambaruto   +2 more
wiley   +1 more source

New Moons of Uranus and Neptune from Ultradeep Pencil-beam Surveys

The Astronomical Journal
We have conducted extremely ultradeep pencil-beam observations for new satellites around both Uranus and Neptune. Tens of images on several different nights in 2021, 2022, and 2023 were obtained, shifted, and added together to reach as faint as 26.9 and ...
Scott S. Sheppard, David J. Tholen, Marina Brozovic, Robert Jacobson, Chadwick A. Trujillo, Patryk Sofia Lykawka, Mike Alexandersen   +6 more
doaj   +1 more source

Uranus' Long‐Term Thermospheric Cooling Is Unlikely to Be Primarily Driven by the Solar Wind

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Over the last 40 yrs, Uranus' thermospheric temperature has decreased by ∼8 K/yr. Here we show that this is less likely to be driven by solar wind kinetic power than previously thought. We determine that the solar wind kinetic power at Uranus has been increasing since the start of solar cycle 24 in 2009, while Uranus's thermospheric ...
Jamie M. Jasinski, Henrik Melin, James A. Sinclair, Sophia Zomerdijk‐Russell, Nick Achilleos, Carol Paty   +5 more
wiley   +1 more source

Magnetopause Reconnection Voltages During the Voyager 2 Flyby of Uranus

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Uranus' magnetosphere presents a unique system to examine global magnetic reconnection processes due to its location far from the Sun. We assess reconnection effectiveness during Voyager 2's Uranus flyby, using a physics‐based analytical model to calculate reconnection voltages applied to the magnetopause.
S. Zomerdijk‐Russell, J. M. Jasinski
wiley   +1 more source

Astrometric results of observations of mutual occultations and eclipses of the Uranian satellites in 2007

, 2020
Context. The photometry of mutual occultations and eclipses of natural planetary satellites can be used to infer very accurate astrometric data. This can be achieved by processing the light curves of the satellites observed during international campaigns
Aslan Z., Valdes Sada P., Casas R., Bhatt B., Miller C., Forné E., Coliac J., Braga-Ribas F., Modic R., Dumas C., Sicardy B., Arlot J., Emelyanov N., Vasundhara R., Colas F., Tanga P., Frappa E., Sahu D., Camargo J., Assafin M., Bel J., Ellington C., Khamitov I., Vieira-Martins R.   +23 more
core  

Uranus Orbiter and Probe: Mission Challenges and Concept Updates Since the Origins, Worlds, and Life Decadal Survey

The Planetary Science Journal
Origins, Worlds, and Life: Planetary Science and Astrobiology in the Next Decade identified a Uranus Orbiter and Probe as the highest-priority strategic mission for the decade 2023–2032, as it enables broad cross-disciplinary science in the largely ...
Amy A. Simon, Richard C. Anderson, Daniel T. Gallagher, Michael J. Amato, Donald H. Ellison, Jacob A. Englander, Carl Engelbrecht, Noble Hatten, Richard S. Saylor, Chloe B. Beddingfield, Richard J. Cartwright, Nancy L. Chabot, Ian J. Cohen, Kathleen Mandt, Tom A. Nordheim, Lynnae C. Quick   +15 more
doaj   +1 more source

The Ionosphere of Uranus as Revealed by JWST

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract The first spectroscopic observations of Uranus by the James Webb Space Telescope were obtained in January 2023. Using these observations, we explored the physical properties of the planet's ionosphere through the analysis of near‐infrared H3+ ${\mathrm{H}}_{3}^{+}$ spectra.
Henrik Melin, L. N. Fletcher, H. B. Hammel, S. N. Milam, L. Moore, T. S. Stallard, J. O’Donoghue, P. I. Tiranti, E. M. Thomas, K. L. Knowles, M. Roman, L. Lamy, O. R. T. King, J. Harkett   +13 more
wiley   +1 more source

Spectral Trends across the Rings and Inner Moons of Uranus and Neptune from JWST NIRCam Images

The Planetary Science Journal
JWST NIRCam images provide low-resolution spectra of the rings and inner moons orbiting Uranus and Neptune. These data reveal systematic variations in spectral parameters like the strength of the strong OH absorption band around 3 μ m and the spectral ...
M. M. Hedman, I. de Pater, R. J. Cartwright, M. El Moutamid, R. DeColibus, M. R. Showalter, M. S. Tiscareno, N. Rowe-Gurney, M. T. Roman, L. N. Fletcher, H. B. Hammel   +10 more
doaj   +1 more source

Solving the Mystery of the Electron Radiation Belt at Uranus: Leveraging Knowledge of Earth's Radiation Belts in a Re‐Examination of Voyager 2 Observations

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Voyager 2 provided the only direct measurement of the radiation environment at Uranus and established the well‐accepted characterization of a system with a weaker ion radiation belt and surprisingly intense electron radiation belt. Recent re‐analysis of the flyby, however, suggests that these observations were not taken during normal solar ...
R. C. Allen, S. K. Vines, G. C. Ho
wiley   +1 more source