Results 31 to 40 of about 22,726,921 (239)

Asymptotic analysis of displaced lunar orbits [PDF]

open access: yes, 2009
The design of spacecraft trajectories is a crucial task in space mission design. Solar sail technology appears as a promising form of advanced spacecraft propulsion which can enable exciting new space science mission concepts such as solar system ...
Simo, Jules, McInnes, Colin R.
core   +3 more sources

A Constraint on the Density of Jupiter’s Moon Thebe from Primordial Dynamics

open access: yesThe Astrophysical Journal Letters
Of the 97 known satellites in the Jovian system, the individual masses and densities of each moon have only been determined for six of them: the four Galileans, Amalthea, and Himalia. In this Letter, we derive a prediction for the mean density (and mass)
Ian R. Brunton, Konstantin Batygin
doaj   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena   +3 more
wiley   +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

Wildfire monitoring technologies of transmission line corridors based on Fengyun-3E satellite imaging

open access: yesFrontiers in Energy Research, 2023
Facing towards the Carbon Neutrality goal by 2060, renewable energy sources are boosted in China in the past decade. Either these renewables or power systems are sensitive and vulnerable to natural disasters, such as wildfire and typhoon.
Jinsong Li   +7 more
doaj   +1 more source

Generating Unconventional Spin‐Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films

open access: yesAdvanced Materials, EarlyView.
ABSTRACT A key aim in spintronics is to achieve current‐induced magnetization switching via spin‐orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across ferromagnet/heavy‐metal devices, giving variations in thickness, composition, or interface quality.
Lauren J. Riddiford   +9 more
wiley   +1 more source

The Strength and Shapes of Contact Binary Objects

open access: yesThe Astrophysical Journal Letters
While contact binary objects are common in the solar system, their formation mechanism is unclear. In this work we examine several contact binaries and calculate the necessary strength parameters that allow the two lobes to merge without the smaller of ...
Alex J. Meyer, Daniel J. Scheeres
doaj   +1 more source

Finite-Sized Orbiter’s Motion around the Natural Moons of Planets with Slow-Variable Eccentricity of Their Orbit in ER3BP

open access: yesMathematics, 2023
This article is devoted to the study of the stability of movement of a satellite of finite size around the natural satellites of the planets in the solar system, using the new concept of ER3BP with variable eccentricity.
Sergey Ershkov   +3 more
doaj   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald   +7 more
wiley   +1 more source

Periodic orbits for 3 and 4 co-orbital bodies [PDF]

open access: yes, 2014
We investigate the natural families of periodic orbits associated with the equilibrium configurations of the the planar restricted 1 + n body problem for the case 2 « n « 4 equal mass satellites.
McInnes, Colin, Verrier, Patricia
core   +2 more sources

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