Results 21 to 30 of about 34,434 (269)
Detection of the infrared aurora at Uranus with Keck-NIRSPEC [PDF]
Nature Astronomy, 2023 Near-infrared (NIR)-wavelength observations of Uranus have been unable to locate any infrared aurorae, despite many attempts to do so since the 1990s.
E. Thomas +6 more
semanticscholar +1 more source
URANUS: Radio Frequency Tracking, Classification and Identification of Unmanned Aircraft Vehicles [PDF]
IEEE Open Journal of Vehicular Technology, 2022 Safety and security issues for Critical Infrastructures are growing as attackers adopt drones as an attack vector flying in sensitive airspaces, such as airports, military bases, city centers, and crowded places.
Domenico Lofú +3 more
semanticscholar +1 more source
Empirical structure models of Uranus and Neptune [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Uranus and Neptune are still poorly understood. Their gravitational fields, rotation periods, atmosphere dynamics, and internal structures are not well determined.
Benno A. Neuenschwander, R. Helled
semanticscholar +1 more source
The Promise and Limitations of Precision Gravity: Application to the Interior Structure of Uranus and Neptune [PDF]
The Planetary Science Journal, 2022 We study the constraining power of a high-precision measurement of the gravity field for Uranus and Neptune, as could be delivered by a low-periapse orbiter.
N. Movshovitz +4 more
semanticscholar +1 more source
Coaccretion + Giant-impact Origin of the Uranus System: Tilting Impact [PDF]
Astrophysical Journal, 2022 The origin of the Uranian satellite system remains uncertain. The four major satellites have nearly circular, coplanar orbits, and the ratio of the satellite system to planetary mass resembles Jupiter’s satellite system, suggesting the Uranian system was
R. Rufu, R. Canup
semanticscholar +1 more source
Possible In Situ Formation of Uranus and Neptune via Pebble Accretion [PDF]
Astrophysical Journal, 2022 The origin of Uranus and Neptune is still unknown. In particular, it has been challenging for planet formation models to form the planets in their current radial distances within the expected lifetime of the solar nebula.
C. Valletta, R. Helled
semanticscholar +1 more source
Guiding light by and beyond the total internal reflection mechanism [PDF]
, 2005 This thesis reports a series of techniques the author has developed to model various waveguiding structures, including the conventional planar and channel waveguides working by, and the advanced structures working beyond the TIR mechanism.
Uranus, Henri Putra
core +18 more sources
Tilting Uranus via the migration of an ancient satellite [PDF]
Astronomy & Astrophysics, 2022 Context. The 98{\deg}-obliquity of Uranus is commonly attributed to giant impacts that occurred at the end of the planetary formation. This picture, however, is not devoid of weaknesses. Aims.
M. Saillenfest +6 more
semanticscholar +1 more source
Unknown Ancient sources of Byzantine military treatises [PDF]
Hypothekai, 2021 The article is a preliminary attempt to attribute two lists of sources from Byzantine military treatises: the first one comes from the "Taktica" by the Byzantine emperor Leo VI the Wise (886-912), and the second - from "Taktika" by Nicephorus Uranus, the
Alexander Nefyodkin
doaj +1 more source
Thermal evolution of Uranus and Neptune [PDF]
Astronomy & Astrophysics, 2021 Thermal evolution models suggest that the luminosities of both Uranus and Neptune are inconsistent with the classical assumption of an adiabatic interior.
L. Scheibe, N. Nettelmann, R. Redmer
semanticscholar +1 more source