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相关论文: A correlation of the cosmic microwave sky with lar…

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We investigate the correlation of gravitational lensing of the cosmic microwave background (CMB) with several tracers of large-scale structure, including luminous red galaxies (LRGs), quasars, and radio sources. The lensing field is…

天体物理学 · 物理学 2008-11-26 Christopher M. Hirata , Shirley Ho , Nikhil Padmanabhan , Uros Seljak , Neta Bahcall

Recently, we presented evidence for a cross-correlation of the WMAP satellite map of the cosmic microwave background (CMB) and the HEAO1 satellite map of the hard X-ray background (XRB) with a dimensionless amplitude of 0.14 +- 0.05…

天体物理学 · 物理学 2009-11-10 Stephen Boughn , Robert Crittenden

We present results for the cross-correlation between the WMAP 1st-year cosmic microwave background (CMB) anisotropy data and optical galaxy surveys: the APM and SDSS DR1 catalogs. Our measurement of a positive CMB-galaxy correlation on…

天体物理学 · 物理学 2007-05-23 Pablo Fosalba , Enrique Gaztanaga , Francisco J. Castander

We present a new limit on the cosmological constant based on the absence of correlations between the cosmic microwave background (CMB) and the distribution of distant radio sources. In the cosmological constant-cold dark matter models…

天体物理学 · 物理学 2009-11-07 S. P. Boughn , R. G. Crittenden

We have detected statistically significant correlations between the cosmic microwave background and two tracers of large-scale structure, the HEAO1 A2 full sky hard X-ray map and the NVSS 1.4 GHz, nearly full sky radio galaxy survey. The…

天体物理学 · 物理学 2009-11-10 S. P. Boughn , R. G. Crittenden

A detailed search has been made for evidence of foreground contributions to the Cosmic Microwave Background (CMB) WMAP, such foregrounds being related to our Galaxy. We find remarkable results. On the largest angular scales we find…

天体物理学 · 物理学 2009-11-10 Tadeusz Wibig , Arnold W. Wolfendale

In universes with significant curvature or cosmological constant, cosmic microwave background (CMB) anisotropies are created very recently via the Rees-Sciama or integrated Sachs-Wolfe effects. This causes the CMB anisotropies to become…

天体物理学 · 物理学 2009-10-30 S. P. Boughn , R. G. Crittenden , N. G. Turok

Integrated Sachs-Wolfe (ISW) effect can be estimated by cross-correlating Cosmic Microwave Background (CMB) sky with tracers of the local matter distribution. At late cosmic time, the dark energy induced decay of gravitation potential…

宇宙学与河外天体物理 · 物理学 2011-03-21 Guo-Chin Liu , Kin-Wang Ng , Ue-Li Pen

In this review, I outline the use of galaxy correlations to constrain cosmological parameters. As with the Cosmic Microwave Background (CMB), the density of dark and baryonic matter imprints important scales on the fluctuations of matter…

天体物理学 · 物理学 2008-11-26 Robert C. Nichol

The integrated Sachs-Wolfe (ISW) effect in the cosmic microwave background (CMB) as measured through its correlation with galaxies provides a unique opportunity to study the dynamics of the dark energy through its large scale clustering…

天体物理学 · 物理学 2011-05-12 Wayne Hu , Ryan Scranton

We report and analyse the presence of foregrounds in the cosmic microwave background (CMB) radiation associated to extended galactic halos. Using the cross correlation of Planck and WMAP maps and the 2MRS galaxy catalogue, we find that the…

宇宙学与河外天体物理 · 物理学 2026-03-19 Heliana E. Luparello , Ezequiel F. Boero , Marcelo Lares , Ariel G. Sánchez , Diego García Lambas

We use a temperature map of the cosmic microwave background (CMB) obtained using the South Pole Telescope at 150 GHz to construct a map of the gravitational convergence to z ~ 1100, revealing the fluctuations in the projected mass density.…

We study the large-scale angular correlation signatures of the Cosmic Microwave Background (CMB) temperature fluctuations from WMAP data in several spherical cap regions of the celestial sphere, outside the Kp0 or Kp2 cut-sky masks. We…

天体物理学 · 物理学 2008-11-26 Armando Bernui , Thyrso Villela , Carlos A. Wuensche , Rodrigo Leonardi , Ivan Ferreira

Non-linear evolution of density fluctuations yields secondary anisotropies in the cosmic microwave background (CMB), which are correlated with the same density fluctuations that can be measured by weak lensing (WL) surveys. We study the…

天体物理学 · 物理学 2009-11-13 Atsushi J. Nishizawa , Eiichiro Komatsu , Naoki Yoshida , Ryuichi Takahashi , Naoshi Sugiyama

We present the results of a search for gravitational lensing of the cosmic microwave background (CMB) in cross-correlation with the projected density of luminous red galaxies (LRGs). The CMB lensing reconstruction is performed using the…

We cross-correlate large scale structure (LSS) observations from a number of surveys with CMB anisotropies from WMAP to investigate the Integrated Sachs-Wolfe (ISW) effect as a function of redshift, covering z~0.1-2.5. Our main goal is to…

天体物理学 · 物理学 2008-11-26 Shirley Ho , Christopher M. Hirata , Nikhil Padmanabhan , Uros Seljak , Neta Bahcall

Recent studies by a number of independent collaborations, have correlated the CMB temperatures measured by the WMAP satellite with different galaxy surveys that trace the matter distribution with light from the whole range of the…

天体物理学 · 物理学 2009-11-10 E. Gaztanaga , M. Manera , T. Multamaki

We present a cross-correlation analysis of the WMAP cosmic microwave background (CMB) temperature anisotropies and the SDSS galaxy density fluctuations. We find significant detections of the angular CMB-galaxy correlation for both the flux…

天体物理学 · 物理学 2007-05-23 Pablo Fosalba , Enrique Gaztanaga , Francisco Castander

We investigate the cross-correlation between the cosmic infrared background (CIB) and cosmic microwave background (CMB) anisotropies due to the integrated Sachs-Wolfe (ISW) effect. We first describe the CIB anisotropies using a linearly…

宇宙学与河外天体物理 · 物理学 2011-09-06 S. Ilic , M. Douspis , M. Langer , A. Pénin , G. Lagache
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