搜索结果: 1-15 共查到“理学 scale structure”相关记录17条 . 查询时间(0.51 秒)
Galaxy cluster formation from the large-scale structure: a case study of the Abell 2125 complex at z=0.247
C153 SW cD
2014/12/24
The structure of the universe is believed to have formed by clustering hierarchically from small to large scales. Much of this evolution occurs very slowly but at a few special times more rapid, viole...
Large-scale structure of the molecular gas in Taurus revealed by high linear dynamic range spectral line mapping
molecules structure
2014/12/23
We report the results of a 100 deg2 survey of the Taurus molecular cloud region in 12CO and 13CO J = 1→ 0. The image of the cloud in each velocity channel includes 3 × 106 Nyquist-sampled pixels on a ...
AzTEC Millimetre Survey of the COSMOS field - II. Source count overdensity and correlations with large-scale structure
galaxies submillimeter gravitational lensing
2014/12/22
We report an overdensity of bright submillimetre galaxies (SMGs) in the 0.15 deg2 AzTEC/COSMOS survey and a spatial correlation between the SMGs and the optical-IR galaxy density at z≲ 1.1. This...
Isocurvature modes and Baryon Acoustic Oscillations II: gains from combining CMB and Large Scale Structure
Baryon Acoustic Oscillations combining CMB Large Scale Structure
2011/9/29
We consider cosmological parameters estimation in the presence of a non-zero isocurvature contribution in the primordial perturbations. A previous analysis showed that even a tiny amount of isocurvatu...
Clipping the Cosmos: The Bias and Bispectrum of Large Scale Structure
Bias Bispectrum Large Scale Structure
2011/10/21
A large fraction of the information collected by cosmological surveys is simply discarded to avoid lengthscales which are difficult to model theoretically. We introduce a new technique which enables t...
Effects of large-scale structure on the accuracy of weak lensing mass measurements
cosmology observations dark matter large-scale structure of Uni-verse galaxies clusters
2010/11/10
Weak gravitational lensing has become an important method to determine the masses of galaxy clusters. The intrinsic shapes of the galaxies are a dominant source of uncertainty, but there are other lim...
Testing gravity using the growth of large scale structure in the Universe
Methods numerical — Cosmology theory — dark energy
2010/11/15
Future galaxy surveys hope to distinguish between the dark energy and modified gravity
scenarios for the accelerating expansion of the Universe using the distortion of clustering in
redshift space. ...
Interplay between the small and the large scale structure of spacetime
the small the large scale structure of spacetime
2010/11/16
Existence of frame invariant, maximum, time interval $T$, length $L$, and mass $M$ is postulated. In the de Sitter universe - (1) the life span of universe, (2) the circumference of universe at the p...
Interplay between the small and the large scale structure of spacetime
Interplay small large scale structure of spacetime
2010/12/21
Existence of frame invariant, maximum, time interval T, length L, and mass M is postulated. In the de Sitter universe - (1) the life span of universe,(2) the circumference of universe at the point of ...
Particle-scale structure in frozen colloidal suspensions from small angle x-ray scattering
Particle-scale structure frozen colloidal suspensions small angle x-ray scattering
2010/11/19
During directional solidification of the solvent in a colloidal suspension, the colloidal particles segregate from the growing solid, forming high-particle-density regions with structure on a hierarch...
Large scale structure simulations of inhomogeneous LTB void models
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc)
2011/1/6
We perform numerical simulations of large scale structure evolution in an inhomogeneous Lemaitre-Tolman-Bondi (LTB) model of the Universe. We follow the gravitational collapse of a large underdense re...
Topology of large scale structure as test of modified gravity
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/5
The genus of the iso-density contours is a robust measure of the topology of large-scale structure, and relatively insensitive to galaxies biasing and redshift-space distortions. We show that the grow...
THE SMALL-SCALE STRUCTURE OF THE MAGELLANIC STREAM AS A FOUNDATION FOR GALAXY EVOLUTION
Galaxy: halo Galaxies: evolution Magellanic Clouds Hydrodynamics Instabilities
2010/10/29
The Magellanic Stream (MS) is the nearest example of a gaseous
trail formed by interacting galaxies. While the substantial gas masses in these kinds
of circumgalactic structures are postulated to re...
Observations of Small-Scale Structure in AGB Star Winds：Precursors of Neutral Globules in PNE?
Small-Scale Structure Neutral Globules AGB Star Winds
2009/6/15
Observations of Small-Scale Structure in AGB Star Winds：Precursors of Neutral Globules in PNE?
Small-Scale Structure of Ionospheric Absorption of Cosmic Noise During Pre-Onset and Sharp Onset Phases of an Auroral Absorption Substorm
Substorm cosmic noise absorption
2009/6/10
Impulsive pulsations of ionospheric absorption were found in imaging riometer measurements at
Kilpisjärvi during the pre-onset and onset phases of auroral absorption substorms. The periods of th...