搜索结果: 16-30 共查到“理学 Rotating”相关记录159条 . 查询时间(0.035 秒)
Subsurface flows associated with rotating sunspots
Sun helioseismology, Sun interior, (Sun) sunspots
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2011/10/19
In this paper, we compare components of the horizontal flow below the solar surface in and around regions consisting of rotating and non-rotating sunspots. Our analysis suggests that there is a signif...
Acceleration of particles by rotating black holes: near-horizon geometry and kinematics
Acceleration particles rotating black holes: near-horizon geometry kinematics
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2011/10/14
Nowadays, the effect of infinite energy in the centre of mass frame due to near-horizon collisions attracts much attention.We show generality of the effect combining two seemingly completely different...
Shapes and gravitational fields of rotating two-layer Maclaurin ellipsoids: Application to planets and satellites
two-layer Maclaurin ellipsoids: Application to planets and satellites
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2011/10/12
The exact solution for the shape and gravitational field of a rotating two-layer Maclaurin ellipsoid of revolution is compared with predictions of the theory of figures up to third order in the small ...
Rossby waves and polar spots in rapidly rotating stars: Implications for stellar wind evolution
magnetic fi eld – Stars: activity – Stars: starspots – Stars: oscillations – Physical data and processes: Magnetohydrodynamics
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2011/10/10
Rapidly rotating stars show short-period oscillations in magnetic activity and polar appearance of starspots. The aim of this paper is to study large-scale shallow water waves in the tachoclines of ra...
A rotating molecular disk toward IRAS 18162-2048, the exciting source of HH 80-81
rotating molecular exciting source HH 80-81
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2011/10/10
We present several molecular line emission arcsec and subarcsec observations obtained with the Submillimeter Array (SMA) in the direction of the massive protostar IRAS 18162-2048, the exciting source ...
Perturbed stellar motions around the rotating black hole in Sgr A* for a generic orientation of its spin axis
Classical general relativity Experimental tests of gravitational theories Black holes Physics of black holes Satellite orbits
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2011/8/17
Abstract: Empirically determining the averaged variations of the orbital parameters of the stars orbiting the Supermassive Black Hole (SBH) hosted by the Galactic Centre (GC) in Sgr A* is, in principl...
Modeling of differential rotation in rapidly rotating solar-type stars
Modeling differential rotation rapidly rotating solar-type stars
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2011/10/9
We investigate differential rotation in rapidly rotating solar-type stars by means of an axisymmetric mean field model that was previously applied to the sun. This allows us to calculate the latitudin...
Analytic solutions to the accretion of a rotating finite cloud towards a central object - II. Schwarzschild spacetime
accretion, accretion discs, black hole physics, hydrodynamics, relativistic processes
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2011/9/30
We construct a general relativistic model for the accretion flow of a rotating finite cloud of non-interacting particles infalling onto a Schwarzschild black hole. The streamlines start at a spherical...
Radio Properties of Rotating Radio Transients I: searches for periodicities and randomness in pulse arrival times
stars:neutron – pulsars: general – Galaxy: stellar content
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2011/9/28
We have analysed the long- and short-term time dependence of the pulse arrival times and the pulse detection rates for eight Rotating Radio Transient (RRAT) sources from the Parkes Multi-beam Pulsar S...
Rotating states in driven clock- and XY-models
soft modes nonequilibrium dynamics Statistical Mechanics
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2011/8/23
Abstract: We consider 3D active plane rotators, where the interaction between the spins is of XY-type and where each spin is driven to rotate. For the clock-model, when the spins take N\gg1 possible v...
Obliquely rotating pulsars: current screening
Obliquely rotating pulsars current screening
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2011/9/26
Pulsar electrodynamics has been built up by taking ingredients from two models, the vacuum-dipole model, which ignores the magnetosphere but includes the inductive electric field due to the obliquely ...
Obliquely rotating pulsars: current screening
stars:pulsars general radiation mechanisms
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2011/8/24
Pulsar electrodynamics has been built up by taking ingredients from two models, the vacuum-dipole model, which ignores the magnetosphere but includes the inductive electric field due to the obliquely ...
Synchronization in counter-rotating oscillators
Synchronization counter-rotating oscillators
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2011/7/6
An oscillatory system can have clockwise and anticlockwise senses of rotation. We propose a general rule how to obtain counter-rotating oscillators from the definition of a dynamical system and then i...
Optical Force on Two-level Atoms by Few-cycle Pulsed Gaussian Laser field beyond the Rotating Wave Approximation
Optical Forc Two-level Atoms Few-cycle Pulsed Gaussian Laser field
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2011/9/1
We report a study on light force on a beam of neutral two-level atoms superimposed upon a few-cycle pulsed Gaussian laser field under both resonant and off-resonant condition. The phenomena of focusin...
Radiation effects on natural convection MHD flow in a rotating vertical porous channel partially filled with a porous medium
Natural convection radiation permeability
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2010/9/21
The unsteady natural convection MHD flow of a rotating viscous electrically conducting fluid in a vertical channel partially filled by a porous medium with high porosity in the presence of radiation e...