搜索结果: 1-15 共查到“天体物理学 turbulence”相关记录23条 . 查询时间(0.14 秒)
Study sheds light on turbulence in astrophysical plasmas（图）
sheds light turbulence astrophysical plasmas
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2017/12/19
Plasmas, gas-like collections of ions and electrons, make up an estimated 99 percent of the visible matter in the universe, including the sun, the stars, and the gaseous medium that permeates the spac...
Assessing the Feasibility of Cosmic-Ray Acceleration by Magnetic Turbulence at the Galactic Center
Feasibility Cosmic-Ray Acceleration Magnetic Turbulence the Galactic Center
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2012/2/23
The presence of relativistic particles at the center of our galaxy is evidenced by the diffuse TeV emission detected from the inner $\sim$$2^\circ$ of the Galaxy. Although it is not yet entirely clear...
The Interaction of High-Speed Turbulence with Flames: Turbulent Flame Speed
Turbulent premixed combustion, Turbulence, Flamelet, Turbulent flame speed, Hydrogen-air combustion
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2011/9/14
Direct numerical simulations of the interaction of a premixed flame with driven, subsonic, homogeneous, isotropic,Kolmogorov-type turbulence in an unconfined system are used to study the mechanisms de...
The Interaction of High-Speed Turbulence with Flames: Global Properties and Internal Flame Structure
Turbulent premixed combustion, Turbulence, Flamelet, Flame structure, Hydrogen
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2011/9/14
We study the dynamics and properties of a turbulent flame, formed in the presence of subsonic, high-speed, homogeneous,isotropic Kolmogorov-type turbulence in an unconfined system. Direct numerical si...
Time-dependent Turbulence in Stars
Time-dependent Turbulence Stars
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2011/1/11
Three-dimensional (3D) hydrodynamic simulations of shell oxygen burning (Meakin and Arnett 2007) exhibit bursty, recurrent fluctuations in turbulent kinetic energy. These are shown to be due to a glob...
Theory of Feedback in Clusters and Molecular Cloud Turbulence
Feedback in Clusters Molecular Cloud Turbulence
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2011/1/11
I review recent numerical and analytical work on the feedback from both low- and high-mass cluster stars into their gasoeus environment. The main conclusions are that i) outflow driving appears capabl...
The Internal-Collision-Induced Magnetic Reconnection and Turbulence (ICMART) Model of Gamma-Ray Bursts
gamma-rays burst general gamma-ray bursts individual GRB 080916C magnetic reconnection turbulence
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2010/11/11
The recent Fermi observation of GRB 080916C shows that the bright photosphere emission associated with a putative fireball is missing, which suggests that the central engine likely launches a Poynting...
Interstellar Turbulence and Star Formation
structure ISM clouds ISM magnetic fields turbulence methods numerical
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2010/11/12
We provide a brief overview of recent advances and outstanding issues in simulations of interstellar turbulence, including isothermal models for interior structure of molecular clouds
and larger-scal...
Effects of Turbulence, Eccentricity Damping, and Migration Rate on the Capture of Planets into Mean Motion Resonance
planetary systems planetary systems formation — planets and satellites formation — turbulence
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2010/11/11
Pairs of migrating extrasolar planets often lock into mean motion resonance as they drift inward. This paper studies the convergent migration of giant planets (driven by a circumstellar disk) and dete...
Impact of MHD Turbulence on Thermal Wind Balance in the Sun
instabilities—rotation—sun magnetohydrodynamics— stars sun
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2010/11/15
The possible role of magneto-rotational instability (MRI) and its driven MHD turbulence in
the solar interior is studied on the basis of the linear and nonlinear theories coupling with
physical para...
Particle reacceleration by compressible turbulence in galaxy clusters: effects of reduced mean free path
acceleration of particles - turbulence - radiation mechanisms non{thermal - galaxies clusters general radio continuum general - X{rays general
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2010/11/11
Direct evidence for in situ particle acceleration mechanisms in the inter-galactic-medium (IGM) is provided by the di use Mpc{scale synchrotron emissions observed from galaxy clusters.
Towards Precision LSST Weak-Lensing Measurement - I: Impacts of Atmospheric Turbulence and Optical Aberration
Astronomical Instrumentation gravitational lensing dark matter cosmology
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2010/11/12
The weak-lensing science of the Large Synoptic Survey Telescope (LSST)project drives the need to carefully model and separate the instrumental arti-facts from the intrinsic shear signal caused by grav...
A Fluid-Dynamical Subgrid Scale Model for Highly Compressible Astrophysical Turbulence
Fluid-Dynamical Subgrid Scale Model Highly Compressible Astrophysical Turbulence
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2011/1/10
We formulate and implement the Euler equations with SGS dynamics and provide numerical tests of an SGS turbulence energy model that predicts the turbulent pressure of unresolved velocity fluctuations ...
Turbulence and magnetic spots at the surface of hot massive stars
Solar and Stellar Astrophysics (astro-ph.SR) Fluid Dynamics (physics.flu-dyn)
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2010/12/29
Hot luminous stars show a variety of phenomena in their photospheres and in their winds which still lack clear physical explanations at this time. Among these phenomena are non-thermal line broadening...
The Molecular Outflows in the rho Ophiuchi Main Cloud: Implications For Turbulence Generation
Solar and Stellar Astrophysics (astro-ph.SR) Galaxy Astrophysics (astro-ph.GA)
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2010/12/29
We present the results of CO (J=3-2) and CO (J=1-0) mapping observations toward the active cluster forming clump, L1688, in the rho Ophiuchi molecular cloud.