搜索结果: 1-9 共查到“天文学 Radius”相关记录9条 . 查询时间(0.095 秒)
Self-bound models of compact stars and recent mass-radius measurements
Self-bound models compact stars recent mass-radius measurements
2011/10/20
The exact composition of a specific class of compact stars, historically referred to as "neutron stars", is still quite unknown. Possibilities ranging from hadronic to quark degrees of freedom, includ...
Short Gamma-ray Bursts: the mass of the accretion disk and the initial radius of the outflow
Short Gamma-ray Bursts:accretion disk initial radius outflow
2011/10/9
In this work we estimate the accretion-disk mass in the specific scenario of binary-neutron-star-merger with current observational data. Assuming that the outflows of short Gamma-ray Bursts (GRBs) are...
Estimate of halo ellipticity as a function of radius with flexions
cosmology – gravitational lensing – fl exion – dark matter halo
2011/9/29
The cold dark matter theory predicts triaxial dark matter haloes. The radial distribution of halo ellipticity depends on baryonic processes and the nature of dark matter particles (collisionless or co...
The Mass-Radius(-Rotation?) Relation for Low-Mass Stars
Mass-Radius Relation Low-Mass Stars
2010/11/15
The fundamental properties of low-mass stars are not as well understood as those of their more
massive counterparts. The best method for constraining these properties, especially masses and radii,is ...
HIFLUGCS: Galaxy Cluster Scaling Relations between X-ray Luminosity, Gas Mass, Cluster Radius, and Velocity Dispersion
Cosmology observations — (Cosmology:) dark matter — Galaxies clusters: general — Methods
2010/11/15
We present relations between X-ray luminosity and velocity dispersion (L − ), X-ray luminosity and gas mass (L − Mgas), and between cluster radius and velocity dispersion (r500 − )...
Measuring the escape velocity and mass profiles of galaxy clusters beyond their virial radius
gravitation galaxies clusters general techniques miscellaneous cosmology miscellaneous cosmology
2010/11/9
The caustic technique uses galaxy redshifts alone to measure the escape velocity and mass profiles of galaxy clusters to clustrocentric distances well beyond the virial ra-dius, where dynamical equili...
The radius anomaly in the planet/brown dwarf overlapping mass regime
radius anomaly mass regime
2010/11/9
The recent detection of the transit of very massive substellar companions (Deleuil et al. 2008; Bouchy et al. 2010;Anderson et al. 2010; Bakos et al. 2010) provides a strong con-
straint to planet an...
A precise asteroseismic age and radius for the evolved Sun-like star KIC 11026764
precise asteroseismic age evolved Sun-like star KIC 11026764
2011/1/10
The primary science goal of the Kepler Mission is to provide a census of exoplanets in the solar neighborhood, including the identification and characterization of habitable Earth-like planets. The as...
Core Radius-Mass Evolution of Globular Clusters。