Reconstructing the primordial power spectrum
نویسندگان
چکیده
منابع مشابه
Reconstructing 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 ...
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We constrain the form of the primordial power spectrum using Wilkinson Microwave Anisotropy Probe (WMAP) 3-year cosmic microwave background (CMB) data in addition to complementary large-scale structure (LSS) data. We extend the work of the WMAP team (Spergel et al. 2006) to that of a fully Bayesian approach whereby we compute the comparative Bayesian evidence in addition to parameter estimates ...
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We develop a new approach toward a high resolution non-parametric reconstruction of the primordial power spectrum using WMAP cosmic microwave background temperature anisotropies that we confront with SDSS large-scale structure data in the range k ∼ 0.01 − 0.1 hMpc. We utilise the standard ΛCDM cosmological model but we allow the baryon fraction to vary. In particular, for the concordance baryon...
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ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2003
ISSN: 1387-6473
DOI: 10.1016/j.newar.2003.07.026