搜索结果: 1-14 共查到“天体物理学 Stability”相关记录14条 . 查询时间(0.296 秒)
We present new spectropolarimetric observations of the normal A-type star Vega, obtained during the summer of 2010 with NARVAL at T\'elescope Bernard Lyot (Pic du Midi Observatory). This new time-seri...
Pions may remain stable under certain conditions in a dense media at zero temperature in the normal phase (non pion superfluid state). The stability condition is achieved when the in-media pion width ...
X-type and Y-type junction stability in domain wall networks
junction stability domain wall networks
2011/10/18
We develop an analytic formalism that allows one to quantify the stability properties of X-type and Y-type junctions in domain wall networks in two dimensions. A similar approach might be applicable t...
Stability analysis of a tidally excited internal gravity wave near the centre of a solar-type star
planetary systems stars: rotation binaries: close hydrodynamics waves instabilities
2011/9/15
We perform a stability analysis of a tidally excited nonlinear internal gravity wave near the centre of a solar-type star in two-dimensional cylindrical geometry. The motivation is to understand the t...
The role of flow geometry in influencing the stability criteria for low angular momentum axisymmetric black hole accretion
the stability criteria low angular momentum axisymmetric black hole accretion
2011/1/11
Using mathematical formalism borrowed from dynamical systems theory, a complete analytical investigation of the critical behaviour of the stationary flow configuration for the low angular momentum axi...
Gravitational stability and dynamical overheating of stellar disks of galaxies
Gravitational stability dynamical overheating stellar disks of galaxies
2011/1/11
We use the marginal stability condition for galactic disks and the stellar velocity dispersion data published by different authors to place upper limits on the disk local surface density at two radial...
Stability of general-relativistic accretion disks
Stability general-relativistic accretion disks
2010/11/15
Self-gravitating relativistic disks around black holes can form as transient structures in a number of astrophysical scenarios such as binary neutron star and black hole-neutron star coalescences, as ...
Stability and QuasinormalModes of Black holes in Tensor-Vector-Scalar theory: Scalar Field Perturbations
Stability QuasinormalModes Black holes Tensor-Vector-Scalar theory Scalar Field Perturbations Tensor-Vector-Scalar theory
2010/11/16
The imminent detection of gravitational waves will trigger precision tests of gravity through
observations of quasinormal ringing of black holes. While General Relativity predicts just two po-larizat...
The baroclinic instability in the context of layered accretion. Self-sustained vortices and their magnetic stability in local compressible unstratified models of protoplanetary disks
baroclinic instability magnetic stability protoplanetary disks
2010/11/10
Context. Turbulence and angular momentum transport in accretion disks remain a topic of debate. With the realization that dead zones are robust features of protoplanetary disks, the search for hydrody...
Effect of Perturbations in Coriolis and Centrifugal Forces on the Nonlinear Stability of Equilibrium Point in Robe's Restricted Circular Three-Body Problem
Perturbations Centrifugal Forces Coriolis three-body problem
2009/9/4
The effect of perturbations in Coriolis and cetrifugal forces on the nonlinear stability of the equilibrium point of the Robe's (1977) restricted circular three-body problem has been studied when the ...
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Ellipsoids Carrying Dedekind-Type Internal Currents
Self-Gravitating Inhomogeneous Fluid Confocal Ellipsoids Internal Currents
2009/6/18
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Ellipsoids Carrying Dedekind-Type Internal Currents。
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Spheroids Rotating with Different Angular Velocities
Self-Gravitating Inhomogeneous Fluid Angular Velocities Confocal Spheroids Rotating
2009/6/4
On the Stability of a Self-Gravitating Inhomogeneous Fluid in the Form of Two Confocal Spheroids Rotating with Different Angular Velocities。
THE CHARACTER OF THE INFLUENCE OF THERMAL PROCESSES ON THE STABILITY OF SPIRAL DENSITY WAVES
THERMAL PROCESSES SPIRAL DENSITY WAVES
2009/4/22
THE CHARACTER OF THE INFLUENCE OF THERMAL PROCESSES ON THE STABILITY OF SPIRAL DENSITY WAVES。
STABILITY OF THE RELATIVE EQUILIBRIA IN THE GENERALIZED J2 PROBLEM
celestial bodies dynamical systems potential function
2009/3/18
For a large class of concrete astronomical situations, the motion
of celestial bodies is modelled by dynamical systems associated to a potential function
α/r + εU (r = distance between particles, α ...