Results 1 to 10 of about 19,952 (163)

A new kinematical definition of orbital eccentricity [PDF]

open access: yesSerbian Astronomical Journal, 2009
A new concept of orbital eccentricity is given. The dimensionless quantities proposed in the present paper to serve as orbital eccentricities have a kinematical nature. The purpose is to use them in describing the motion for the case of three-dimensional
Ninković S.
doaj   +3 more sources

On Orbits for a Particular Case of Axial Symmetry [PDF]

open access: yesSerbian Astronomical Journal, 2009
A particular case of steady state and axial symmetry - the potentialformula proposed by Miyamoto and Nagai - is studied. A number of orbits of abound test particle is determined numerically, with both, the potentialparameters and initial conditions ...
Jovanović, B., Ninković, S.
doaj   +3 more sources

Exploring the Fundamental Mechanism in Driving Highest-Velocity Ionized Outflows in Radio AGNs

open access: yesUniverse, 2022
We investigate the ionized gas kinematics relationship with X-ray, radio and accreting properties using a sample of 348 nearby ...
Ashraf Ayubinia   +6 more
doaj   +1 more source

Computational Dynamics of Multi-Rigid-Body System in Screw Coordinate

open access: yesApplied Sciences, 2023
This paper investigates the kinematics and dynamics of multi-rigid-body systems in screw form. The Newton–Euler dynamics equations are established in screw coordinates. All forces and torques of the multi-rigid-body system can be solved straightforwardly
Jing-Shan Zhao   +2 more
doaj   +1 more source

Sleep-push movement performance in elite field hockey champions with and without training specialization

open access: yesFrontiers in Psychology, 2023
ObjectiveTo investigate kinematic and muscle activity differences during the sleep-push movement in elite field hockey players. We hypothesized that players with specialized sleep-push movement training (specialists) would possess a lower center of mass (
Killian Cosendey   +5 more
doaj   +1 more source

Gasflows in Barred Galaxies with Big Orbital Loops—A Comparative Study of Two Hydrocodes

open access: yesUniverse, 2022
We study the flow of gas in a barred-galaxy model, in which a considerable part of the underlying stable periodic orbits have loops where, close to the ends of the bar, several orbital families coexist and chaos dominates.
Stavros Pastras   +2 more
doaj   +1 more source

A New Dynamical Parameter for the Study of Sticky Orbits in a 3D Galactic Model

open access: yesOpen Astronomy, 2011
A 3D dynamical model is used to study the motion in the central parts of an elliptical galaxy, hosting a massive and dense nucleus. Our aim is to investigate the regular or chaotic character of the motion, with emphasis in the different chaotic ...
Zotos Euaggelos E.
doaj   +1 more source

“Kinematics and Dynamics” [PDF]

open access: yesNature, 1888
MAY I ask a short space in your columns to refer to a few points in Prof. Greenhill's review of my book on “Kinematics and Dynamics,” published in your issue of February 16 (p. 361). I shall be as brief as possible.
openaire   +3 more sources

Kinematics and Dynamics [PDF]

open access: yesSymposium - International Astronomical Union, 1968
In this chapter we shall use the main results of Chapters V through VII to study the dynamical and kinematical properties of quantum mechanical systems. This will lead to the Schrodinger equation, the well known formulas for the position, momentum, and spin observables, and to the standard expressions for the Hamiltonians which enter the quantum theory
openaire   +2 more sources

Role of Gaseous Disk in the Formation of the Spiral Structure of the Milky Way Galaxy

open access: yesOpen Astronomy, 2016
We use observational gaseous and stellar density distributions in the disk of the Milky Way (MW) galaxy together with the disk rotation curve and measured disk velocity dispersion to build collisionless and combined collisionless-gaseous equilibrium ...
Korchagin V. I.   +2 more
doaj   +1 more source

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