搜索结果: 61-75 共查到“理学 Rotating”相关记录159条 . 查询时间(0.08 秒)
Investigating coronal saturation and super-saturation in fast-rotating M-dwarf stars
Solar and Stellar Astrophysics (astro-ph.SR) High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/28
At fast rotation rates the coronal activity of G- and K-type stars has been observed to "saturate" and then decline again at even faster rotation rates -- a phenomenon dubbed "super-saturation".
Rotating toroids in G10.62-0.38, G19.61-0.23, and G29.96-0.02
Galaxy Astrophysics (astro-ph.GA)
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2010/12/24
In recent years, we have detected clear evidence of rotation in more than 5 hot molecular cores (HMCs). Their identification is confirmed by the fact that the rotation axes are parallel to the axes of...
A qubit strongly-coupled to a resonant cavity: asymmetry of the spontaneous emission spectrum beyond the rotating wave approximation
spontaneous emission spectrum vacuum Rabi splitting qubit strongly-coupled to a cavity
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2010/10/20
We investigate the spontaneous emission spectrum of a qubit in a lossy resonant cavity. We
use neither the rotating-wave approximation nor the Markov approximation. The qubit-cavity
coupling strengt...
We study the frictional torque acting on particles rotating in empty space. At zero temperature,vacuum friction transforms mechanical energy into light emission and produces particle heating.However, ...
The Null Condition and Global Existence for Nonlinear Wave Equations on Slowly Rotating Kerr Spacetimes
Null Condition Global Existence Nonlinear Wave Equations Rotating Kerr Spacetimes
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2010/12/16
We study a semilinear equation with derivatives satisfying a null condition on slowly rotating Kerr spacetimes. We prove that given sufficiently small initial data, the solution exists globally in tim...
A pseudospectral quadrature method for Navier-Stokes equations on rotating spheres
Navier-Stokes equations unit sphere vector spherical harmonics
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2010/12/8
In this work, we describe, analyze, and implement a pseudospec-tral quadrature method for a global computer modeling of the incompressible surface Navier-Stokes equations on the rotating unit sphere. ...
A Vector Field Method Approach to Improved Decay for Solutions to the Wave Equation on a Slowly Rotating Kerr Black Hole
Vector Field Method Approach Improved Decay for Solutions Wave Equation Kerr Black Hole
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2010/12/15
We prove that sufficiently regular solutions to the wave equation gK = 0 on the exterior of a sufficiently slowly rotating Kerr black hole obey the estimates || C(t)−3
2 + on a compact r...
A singular limit for compressible rotating fluids
singular limit compressible rotating fluids
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2010/12/3
We consider a singular limit problem for the Navier-Stokes system of a rotating compressible fluid, where the Rossby and Mach numbers tend simultaneously to zero. The limit problem
is identified as t...
Extracting Information from the Gravitational Redshift of Compact Rotating Objects
Maximal angular velocity—stars neutron—stars rotation.
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2010/9/15
Essential macroscopic internal properties of compact objects can be related to each other with the help of General Relativity. A somewhat familiar example is the relationship between the compactness M...
Boundary value problems for the stationary axisymmetric Einstein equations: a disk rotating around a black hole
Boundary value problems black hole axisymmetric Einstein equations
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2010/4/2
We solve a class of boundary value problems for the stationary axisymmetric Einstein equations corresponding to a disk of dust rotating uniformly around a central black hole. The solutions are given e...
Area spectra of the rotating BTZ black hole from quasinormal modes
black hole quasinormal modes discrete spectrum
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2010/3/19
Following Bekenstein's suggestion that the horizon area of a black hole should be quantized, the discrete spectrum of the horizon area has been investigated in various ways. By considering the quasino...
An instability of higher-dimensional rotating black holes
higher-dimensional black holes
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2010/3/19
We present the first example of a linearized gravitational instability of an asymptotically flat vacuum black hole. We study perturbations of a Myers-Perry black hole with equal angular momenta in an ...
Evolutions of Magnetized and Rotating Neutron Stars
Rotating Neutron Stars Evolutions of Magnetized
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2010/3/17
We study the evolution of magnetized and rigidly rotating neutron stars within a fully general relativistic implementation of ideal magnetohydrodynamics with no assumed symmetries in three spatial dim...
Classification of spatially homogeneous rotating space-times according to their conformal vector fields
Direct integration technique Conformal vector field
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2010/9/13
Direct integration technique is used to study non conformally flat spatially homogeneous rotating space-times according to their conformal vector fields. It is shown that the above space-times do not ...
MHD Couette flow in a rotating system in the presence of an inclined magnetic field
MHD Couette flow Hartmann number rotation parameter
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2010/9/17
Steady hydromagnetic Couette flow of a viscous incompressible electrically conducting fluid in a rotating system in the presence of an inclined magnetic field is studied. Exact solution of the governi...