搜索结果: 1-15 共查到“天体物理学 cosmology”相关记录22条 . 查询时间(0.188 秒)
Gamma ray burst distances and the timescape cosmology
Gamma ray burst distances timescape cosmology
2011/10/20
Gamma ray bursts can potentially be used as distance indicators, providing the possibility of extending the Hubble diagram to redshifts ~7. Here we follow the analysis of Schaefer (2007), with the aim...
Power-law entropy-corrected HDE and NADE in Brans-Dicke cosmology
Power-law entropy-corrected HDE Brans-Dicke cosmology
2011/10/13
Considering the power-law corrections to the black hole entropy, which appear in dealing with the entanglement of quantum fields in and out the horizon, the holographic energy density is modified acco...
A way out of the dark age in cosmology
spacetime theory aether redshift cosmic expansion first principles
2011/8/4
Abstract: Current doctrines relevant to cosmology are criticized for not being well founded, not being based on definitions and unquestionable first principles alone or violating such principles. This...
Astrophysics and cosmology with galaxy clusters: the WFXT perspective
Astrophysics cosmology galaxy clusters
2011/1/13
We discuss the central role played by the X-ray study of hot baryons within galaxy clusters to reconstruct the assembly of cosmic structures and to trace the past history of star formation and accret...
In chameleon field theories a scalar field can couple to matter with gravitational strength and still evade local gravity constraints due to a combination of self-interactions and the couplings to mat...
Observational astronomy has shown significant growth over the last decade and has made important contributions to cosmology. A major paradigm shift in cosmology was brought about by observations of Ty...
Real-time Cosmology
Real-time Cosmology
2010/11/15
In recent years the possibility of measuring the temporal change of radial and transverse position of sources in the sky in real time have become conceivable thanks to the thoroughly improved techniqu...
The curvaton scenario in Brane cosmology: model parameters and their constraints
Cosmology Intermediate Inflation Brane Curvaton
2010/11/16
We have studied the curvaton scenario in brane world cosmology in an intermediate inflationary
scenario. This approach has allowed us to find some constraints on different parameters that appear in t...
Inflationary observables in loop quantum cosmology
Cosmology of Theories beyond the SM Loop quantum gravity and cosmology
2010/11/16
The full set of cosmological observables coming from linear scalar and tensor perturbations of loop quantum cosmology is computed in the presence of inverse-volume corrections.
In this article we give a brief review of the fundamental physics that can be done with the future space-based gravitational wave detector LISA. This includes detection of gravitational wave bursts co...
Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
Inflation Primordial Perturbations non-Gaussianities
2010/11/16
We investigate thermal inflation in double-screen entropic cosmology. We find that its realization is general, resulting from the system evolution from non-equilibrium to equilibrium. Furthermore,goin...
The nature of assembly bias - I. Clues from a LCDM cosmology
cosmology large-scale structure of Universe - cosmology theory -cosmology dark matter - galaxies
2010/11/11
We present a new proxy for the overdensity peak height for which the large-scale clustering of haloes of a given mass does not vary significantly with the assembly history.
Observational constraints on Chaplygin cosmology in a braneworld scenario with induced gravity and curvature effect
Cosmology Dark energy -Cosmology theory- Cosmology Observations
2010/11/16
We study cosmological dynamics and late-time evolution of an extended induced grav-ity braneworld scenario. In this scenario, curvature effects are taken into account via the
Gauss-Bonnet term in the...
Conformal Cosmology and the Pioneer Anomaly
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc)
2011/1/6
We review the fundamental results of a new cosmological model, based on conformal gravity, and apply them to the analysis of the early data of the Pioneer anomaly. We show that our conformal cosmology...
The Atacama Cosmology Telescope: Sunyaev Zel'dovich Selected Galaxy Clusters at 148 GHz in the 2008 Survey
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/24
We report on twenty-three clusters detected blindly as Sunyaev-Zel'dovich (SZ) decrements in a 148 GHz, 455 square-degree map of the southern sky made with data from the Atacama Cosmology Telescope 20...