Results 51 to 60 of about 261 (167)

A High-precision Dynamical Model of Callisto: Incorporating Rotation Effects within Multilayer Internal Structure Models

open access: yesThe Astrophysical Journal
China is planning to launch the “Tianwen-4” mission around the year 2030, with its aim being the exploration of Jupiter and its moon, Callisto. Within the realm of deep space exploration, the accuracy of ephemerides is of great importance.
Kai Huang   +4 more
doaj   +1 more source

Energetic particle environment of Jupiter's radiation belts

open access: yes地球与行星物理论评
Jupiter possesses the strongest intrinsic magnetic field, the fastest rotation rate, the most volcanically active moon (Io), and the strongest radiation belts among all planets in the solar system.
Xing Cao   +6 more
doaj   +1 more source

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

open access: yesInternational 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

On the Origin and Dynamical Evolution of Jupiter’s Moon Amalthea

open access: yesThe Astrophysical Journal
Interior to the orbits of Jupiter’s iconic Galilean moons are four small satellites with individual mean radii R  ≲ 84 km. Multiple lines of evidence suggest that these bodies formed at a more distant location in Jupiter’s circumplanetary disk before ...
Ian R. Brunton, Konstantin Batygin
doaj   +1 more source

Simulation of the Tianwen-4 Mission Contribution to Jupiter Gravity Field Improvement

open access: yesThe Astrophysical Journal
This study comprehensively evaluates the impact of the expected Chinese Tianwen-4 mission, in conjunction with the existing data from the Juno mission, on enhancing the understanding of Jupiter’s gravity field.
Zohaib Afzal   +6 more
doaj   +1 more source

Ion cyclotron waves: a tool for characterizing neutral particle profiles in extended exospheres

open access: yesFrontiers in Astronomy and Space Sciences
Planetary exospheres are usually observed using transit spectroscopic methods, such as the Lyman-α line, which is mainly limited by interstellar medium absorption and airglow contamination from the geocorona when using low-orbit space telescopes or ...
Helmut Lammer   +6 more
doaj   +1 more source

Dynamical aspects of jovian irregular satellites

open access: yes, 2011
PhD thesis, 5 pages, 0 figures, Abstract & contact ...
openaire   +2 more sources

Spectral Decomposition Reveals Surface Processes on Europa

open access: yesThe Astrophysical Journal
Competing processes shape Europa’s surface: geological activity replenishes material through resurfacing, while bombardment by charged particles alters surface chemical composition. Each process leaves distinct spectral signatures.
Gideon Yoffe, Sahar Shahaf
doaj   +1 more source

Monte Carlo Calculation of Electron Energy Degradation in a Pure O2 Atmosphere

open access: yesThe Astrophysical Journal
Electron degradation serves as a significant energy source in planetary upper atmospheres. In this study, a Monte Carlo model is constructed to investigate the degradation of electrons in a pure O _2 atmosphere under the local approximation. Both elastic
Yangxin Ni   +4 more
doaj   +1 more source

Jupiter wind as a unifying bridge: a testable paradigm in the Tianwen-4 era

open access: yesEarth and Planetary Physics
Jupiter's rotating magnetic field, together with its satellites and rings, generate a composite flow that we term the Jupiter wind in this paper: a multi-source mixture of particles originating from Io's volcanism, Jupiter’s other moons, its rings, and ...
WeiDong Gu   +4 more
doaj   +1 more source

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