搜索结果: 1-12 共查到“天体物理学 role”相关记录12条 . 查询时间(0.25 秒)
Multi-wavelength extragalactic surveys and the role of MeerKAT and SALT
Multi-wavelength extragalactic surveys role MeerKAT SALT
2011/10/21
In these proceedings I discuss a range of surveys that are currently underway at optical, near-infrared and far-infrared wavelengths that have large components accessible to both the Southern African ...
The role of the initial surface density profiles of the disc on giant planet formation: comparing with observations
the initial surface density profiles the disc on giant planet formation
2011/1/10
In order to explain the main characteristics of the observed population of extrasolar planets and the giant planets in the Solar System, we need to get a clear understanding of which are the initial c...
Assessing the Role of Spin Noise in the Precision Timing of Millisecond Pulsars
the Role of Spin Noise the Precision Timing
2011/1/10
We investigate rotational spin noise (referred to as timing noise) in non-accreting pulsars: millisecond pulsars, canonical pulsars, and magnetars. Particular attention is placed on quantifying the st...
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...
Ice chemistry in massive Young Stellar Objects: the role of metallicity
astrochemistry – circumstellar matter – galaxies individual (LMC, SMC) –Magellanic Clouds – stars formation – stars: protostars
2010/11/15
We present the comparison of the three most important ice constituents (water, CO and CO2)
in the envelopes of massive Young Stellar Objects (YSOs), in environments of differentmetallicities:the Gala...
Ionisation in atmospheres of Brown Dwarfs and extrasolar planets I The role of electron avalanche
Brown Dwarfs extrasolar planets
2011/1/10
Brown Dwarf and extrasolar planet atmospheres form clouds which strongly influence the local chemistry and physics. These clouds are globally neutral obeying dust-gas charge equilibrium which is, on s...
The Role of Diffusive Shock Acceleration on Nonequilibrium Ionization in Supernova Remnant Shocks II: Emitted Spectra
High Energy Astrophysical Phenomena (astro-ph.HE)
2011/1/6
We present a grid of nonequilibrium ionization models for the X-ray spectra from supernova remnants undergoing efficient diffusive shock acceleration. The calculation follows the hydrodynamics of the ...
A deep Chandra observation of the poor cluster AWM4 - II. The role of the radio jets in enriching the intra-cluster medium
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/23
We use a Chandra observation of the poor cluster AWM4 to map the temperature and abundance of the intra-cluster medium, so as to examine the influence of the central radio galaxy on its environment.
Forming Planetesimals by Gravitational Instability: I. The Role of the Richardson Number in Triggering the Kelvin-Helmholtz Instability
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/23
Gravitational instability (GI) of a dust-rich layer at the midplane of a gaseous circumstellar disk is one proposed mechanism to form planetesimals, the building blocks of rocky planets and gas giant ...
The role of accretion disks in the formation of massive stars
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
We present radiation hydrodynamics simulations of the collapse of massive pre-stellar cores. We treat frequency dependent radiative feedback from stellar evolution and accretion luminosity at a numeri...
The Lifetimes of Molecular Cloud Cores：What is the Role of the Magnetic Field?
Molecular Cloud Cores Magnetic Field
2009/6/16
The Lifetimes of Molecular Cloud Cores：What is the Role of the Magnetic Field?
THE ROLE OF GEOMAGNETIC FIELD CONFIGURATION ON THE GPS SIGNAL PATHS THROUGH THE MAGNETOSPHERE AND IONOSPHERE
GEOMAGNETIC FIELD CONFIGURATION GPS SIGNAL PATHS MAGNETOSPHERE
2009/4/16
THE ROLE OF GEOMAGNETIC FIELD CONFIGURATION ON THE GPS SIGNAL PATHS THROUGH THE MAGNETOSPHERE AND IONOSPHERE。