Results 41 to 50 of about 11,862 (238)
Co-accretion + Giant Impact Origin of the Uranus System: Post-impact Evolution
Astrophysical Journal, 2022 We investigate aspects of the co-accretion + giant impact scenario proposed by Morbidelli et al. (2012) for the origin of the Uranian satellites. In this model, a regular satellite system formed during gas accretion is impulsively destabilized by a ...
J. Salmon, R. Canup
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Modern Astronomy in Ottoman Madrasa Circles in the First Half of the 19th Century [PDF]
Nazariyat: Journal for the History of Islamic Philosophy and Sciences, 2021 The use of telescopes for scientific purposes has significantly changed our knowledge of the structure of the Solar System. By the mid-19th century, two new planets, a dozen asteroids, and dozens of satellites had been added to the five planets known ...
Orhan Güneş
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The interiors of Uranus and Neptune: current understanding and open questions [PDF]
Philosophical Transactions of the Royal Society A, 2020 Uranus and Neptune form a distinct class of planets in our Solar System. Given this fact, and ubiquity of similar-mass planets in other planetary systems, it is essential to understand their interior structure and composition.
R. Helled, J. Fortney
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The Upper Atmosphere of Uranus from Stellar Occultations. I. Methods and Validation
The Planetary Science Journal, 2023 Measurements made by the Voyager 2 spacecraft during its flybys of Uranus in 1986 found warm stratospheric and hot thermospheric temperatures that cannot be explained by solar energy alone.
William R. Saunders +4 more
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H_2-H_2O demixing in Uranus and Neptune: Adiabatic structure models [PDF]
Astronomy & AstrophysicsDemixing properties of major planetary constituents influence the interior structure and evolution of planets. Comparing experimental and computational data on the miscibility of hydrogen and water to adiabatic profiles suggests that phase separation ...
M. C. Amoros +4 more
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Uranus and Neptune: Origin, Evolution and Internal Structure [PDF]
Space Science Reviews, 2019 There are still many open questions regarding the nature of Uranus and Neptune, the outermost planets in the Solar System. In this review we summarize the current-knowledge about Uranus and Neptune with a focus on their composition and internal structure,
R. Helled, N. Nettelmann, T. Guillot
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Did Uranus' regular moons form via a rocky giant impactor? [PDF]
Icarus (New York, N.Y. 1962), 2021 The formation of Uranus’ regular moons has been suggested to be linked to the origin of its enormous spin axial tilt (~98). A giant impact between proto-Uranus and a 2-3 MEarth impactor could lead to a large tilt and to the formation of an impact ...
J. Woo +5 more
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Beam-axis stability during gantry rotation measured with scintillation dosimetry. [PDF]
J Appl Clin Med PhysAbstract Purpose Volumetric modulated arc therapy (VMAT) requires high mechanical precision due to continuous gantry rotation. This study aims to investigate beam‐axis stability during VMAT delivery and evaluate scintillation‐based imaging as a complementary quality assurance (QA) tool.
Ohira S +9 more
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Does Uranus' Asymmetric Magnetic Field Produce a Relatively Weak Proton Radiation Belt?
Geophysical Research Letters, 2022 Since the Voyager 2 flyby in 1986 the radiation belts of Uranus have presented a problem for physicists. The observations indicate the electron radiation belt is far more intense than the proton radiation belt, and while the electron intensities are ...
A. Masters, C. Ioannou, N. Rayns
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Electromagnetic induction in the icy satellites of Uranus
, 2021 The discovery of subsurface oceans in the outer solar system has transformed our perspective of ice worlds and has led to consideration of their potential habitability.
C. Arridge, J. Eggington
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