搜索结果: 1-15 共查到“天文学 STATISTICAL”相关记录26条 . 查询时间(0.141 秒)
Statistical anisotropy of CMB as a probe of conformal rolling scenario
Statistical anisotropy CMB probe conformal rolling scenario
2012/2/21
Search for the statistical anisotropy in the CMB data is a powerful tool for constraining models of the early Universe. In this paper we focus on the recently proposed cosmological scenario with confo...
Detecting relic gravitational waves in the CMB: A statistical bias
Detecting relic gravitational waves statistical bias
2011/10/13
Analyzing the imprint of relic gravitational waves (RGWs) on the cosmic microwave background (CMB) power spectra provides a way to determine the signal of RGWs. In this Letter, we discuss a statistica...
An Estimator for statistical anisotropy from the CMB bispectrum
Estimator statistical anisotropy CMB bispectrum
2011/10/13
Various data analyses of the Cosmic Microwave Background (CMB) provide observational hints of statistical isotropy breaking. Some of these features can be studied within the framework of primordial ve...
We show how to construct space time lattices with a Regge action proportional to the energy of a given Ising or Potts model macrostate. This allows to take advantage of the existence of exact solution...
Statistical Anisotropy and the Vector Curvaton Paradigm
Statistical Anisotropy Vector Curvaton Paradigm
2011/10/17
The vector curvaton paradigm is reviewed. The mechanism allows a massive vector boson field to contribute to or even generate the curvature perturbation in the Universe. Contribution of vector bosons ...
Statistical mechanics of collisionless orbits. I. Origin of central cusps in dark-matter halos
Cosmology and Extragalactic Astrophysics (astro-ph.CO) Statistical Mechanics (cond-mat.stat-mech)
2010/12/23
We present an equilibrium statistical mechanical theory of collisionless self-gravitational systems with isotropic velocity distributions.
A Statistical Comparison of the Optical/UV and X-ray Afterglows of Gamma-Ray Bursts using the Swift Ultra-violet Optical and X-ray Telescopes
Statistical Comparison the Optical/UV X-ray
2011/1/13
We present the systematic analysis of the UVOT and XRT light curves for a sample of 26 Swift Gamma-Ray Bursts (GRBs). By comparing the optical/UV and X-ray light curves, we found that they are remarka...
Massive and Refined. II. The statistical properties of turbulent motions in massive galaxy clusters with high spatial resolution
The statistical properties turbulent motions massive galaxy clusters
2011/1/13
We study the properties of chaotic motions in the intra cluster medium using a set of 20 galaxy clusters simulated with large dynamical range, using the Adaptive Mesh Refinement code ENZO (e.g. Norman...
Statistical comparison of clouds and star clusters
Statistical comparison clouds star clusters
2011/1/13
The extent to which the projected distribution of stars in a cluster is due to a large-scale radial gradient, and the extent to which it is due to fractal sub-structure, can be quantified -- statistic...
Herschel-ATLAS: Statistical Properties of Galactic Cirrus in the GAMA-9 Hour Science Demonstration Phase Field
Methods statistical ISM structure Infrared ISM continuum dust
2010/11/10
We study the Spectral Energy Distribution (SED) and the power spectrum of Galactic cirrus
emission observed in the 14 deg2 Science Demonstration Phase field of the Herschel-ATLAS
using Herschel and ...
Star formation: statistical measure of the correlation between the prestellar core mass function and the stellar initial mass function
stars formation — stars luminosity function mass function — ISM clouds
2010/11/11
We present a simple statistical analysis of recent numerical simulations exploring the correlation between the core mass function obtained from the fragmentation of a molecular cloud and the stellar m...
Statistical study of dust properties in LMC molecular clouds
Galaxy Astrophysics (astro-ph.GA)
2011/1/5
The objective of this paper is to construct a catalog providing the dust properties and the star formation efficiency (SFE) of the molecular clouds in the Large Magellanic Cloud (LMC). We use the infr...
The Properties of X-ray Cold Fronts in a Statistical Sample of Simulated Galaxy Clusters
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/6
We examine the incidence of cold fronts in a large sample of galaxy clusters extracted from a (512h^-1 Mpc) hydrodynamic/N-body cosmological simulation with adiabatic gas physics computed with the Enz...
Statistical mechanics of collisionless orbits. III. Comparison with N-body simulations
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/23
We compare the DARKexp differential energy distribution, N(E) \propto \exp(\phi_0-E)-1, obtained from statistical mechanical considerations, to the results of N-body simulations of dark matter halos.
Statistical mechanics of collisionless orbits. III. Comparison with N-body simulations
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/23
We compare the DARKexp differential energy distribution, N(E) \propto \exp(\phi_0-E)-1, obtained from statistical mechanical considerations, to the results of N-body simulations of dark matter halos.