Results 21 to 30 of about 17,385 (315)

Periodic Orbits and Warps [PDF]

open access: yesSymposium - International Astronomical Union, 1983
Orbit calculations were done in a rotating triaxial system with a density distribution in accordance with recent observations of spiral galaxies. A search was made for simple closed orbits which are tilted with respect to the plane of the galaxy. A family of stable prograde tilted orbits was found which can explain warps as stationary phenomena.
openaire   +3 more sources

Interaction of two systems with saddle-node bifurcations on invariant circles : I. Foundations and the mutualistic case [PDF]

open access: yes, 2013
The saddle-node bifurcation on an invariant circle (SNIC) is one of the codimension-one routes to creation or destruction of a periodic orbit in a continuous-time dynamical system.
MacKay, Robert S., Baesens, C.
core   +1 more source

Measuring scars of periodic orbits

open access: yesPhysical Review E, 1999
The phenomenon of periodic orbit scarring of eigenstates of classically chaotic systems is attracting increasing attention. Scarring is one of the most important "corrections" to the ideal random eigenstates suggested by random matrix theory. This paper discusses measures of scars and in so doing also tries to clarify the concepts and effects of ...
Kaplan, L., Heller, E. J.
openaire   +3 more sources

Piecewise expanding maps: combinatorics, dynamics and representation of rational numbers

open access: yesESAIM: Proceedings and Surveys, 2014
We establish combinatorial properties of the dynamics of piecewise increasing, continuous, expanding maps of the interval such as description of periodic and pre-periodic points, primitiveness of truncated itineraries and length of ...
Serpa Cristina, Buescu Jorge
doaj   +1 more source

Periodic and homoclinic orbits in a toy climate model [PDF]

open access: yesNonlinear Processes in Geophysics, 1994
A two dimensional system of autonomous nonlinear ordinary differential equations models glacier growth and temperature changes on an idealized planet.
M. Toner, A. D. Kirwan, Jr.
doaj  

Cylindrical Manifolds and Tube Dynamics in the Restricted Three-Body Problem [PDF]

open access: yes, 2004
Within the phase space of the planar circular restricted three-body problem, stable and unstable manifolds of periodic orbits with a S x R (cylindrical) geometry are shown to exist.
Ross, Shane David
core   +1 more source

Bifurcations of Nontwisted Heteroclinic Loop with Resonant Eigenvalues

open access: yesThe Scientific World Journal, 2014
By using the foundational solutions of the linear variational equation of the unperturbed system along the heteroclinic orbits to establish the local coordinate systems in the small tubular neighborhoods of the heteroclinic orbits, we study the ...
Yinlai Jin   +5 more
doaj   +1 more source

A Lycaon pictus impulsive state feedback control model with Allee effect and continuous time delay

open access: yesAdvances in Difference Equations, 2018
Allee effect (i.e. sparse effect) is active when the population density is small. Our purpose is to study such an effect of this phenomenon on population dynamics.
Yaning Li, Huidong Cheng, Yanhui Wang
doaj   +1 more source

Unstable periodic motion in turbulent flows [PDF]

open access: yesNonlinear Processes in Geophysics, 2006
Recently found unstable time-periodic solutions to the incompressible Navier-Stokes equation are reviewed to discuss their relevance to plane Couette turbulence and isotropic turbulence.
G. Kawahara, S. Kida, L. van Veen
doaj  

Characterizing receiver clock behaviors onboard Low Earth Orbiters: A case study of GRACE satellites

open access: yesGeodesy and Geodynamics, 2019
Accurate estimation of clocks, for example for the Gravity Recovery And Climate Experiment (GRACE) twin-satellites, is a critical part of precise orbit determination (POD) that ensures temporal gravity inversion. Characterizing the periodic variations of
Tzu-Pang Tseng, C.K. Shum, Ting-Yi Yang
doaj   +1 more source

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