Probing the primordial power spectrum with cluster number counts
نویسندگان
چکیده
منابع مشابه
The linear power spectrum of observed source number counts
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متن کاملReconstructing the primordial power spectrum
We reconstruct the shape of the primordial power spectrum from the latest cosmic microwave background data, including the new results from the Wilkinson Microwave Anisotropy Probe (WMAP), and large scale structure data from the two degree field galaxy redshift survey (2dFGRS). We tested four parameterizations taking into account the uncertainties in four cosmological parameters. First we parame...
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The combination of Cosmic Microwave Background (CMB) anisotropy measurements and Large-Scale Structure observations has caused dissatisfaction with the standard Cold Dark Matter (sCDM) cosmogony, leading some to advocate a “tilt” of the primordial power spectrum away from scale-invariant (n = 1) to n = 0.8− 0.9. 1 Other CDM cosmogonies have not commonly been tilted but their agreement with the ...
متن کاملLinear power spectrum of observed source number counts
We relate the observable number of sources per solid angle and redshift to the underlying proper source density and velocity, background evolution, and line-of-sight potentials. We give an exact result in the case of linearized perturbations assuming general relativity. This consistently includes contributions of the source density perturbations and redshift distortions, magnification, radial d...
متن کاملPrimordial non-Gaussianity from the covariance of galaxy cluster counts
Carlos Cunha, Dragan Huterer, and Olivier Doré Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, Michigan 48109-1040, USA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA California Institute of Technology, Pasadena, California 91125, USA (Received 17 March 2010; revised manuscript received 4 June 2010; published 19 July 2...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.083508