Constraints on the cosmological parameters from BICEP2, Planck, and WMAP
نویسندگان
چکیده
منابع مشابه
Cosmological parameters and the WMAP data revisited
Several recent papers have made claims about the detection of an asymmetric distribution of large scale power in the cosmic microwave background anisotropy as measured by the WMAP satellite. In this paper, we investigate how the estimates of particular cosmological parameters vary when inferred from power spectra computed separately on the northern and southern hemispheres in three frames of re...
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I discuss whether the standard cosmological models fit the WMAP data well enough to justify parameter estimation with standard assumptions. The observed quadrupole is low (but has significant foreground uncertainty) and drives weak evidence for theoretical models predicting low values, such as models with a running spectral index. Other more seriously outlying points of the WMAP power spectrum ...
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A cosmological model with total density close to critical (and flat geometry), dominated by dark matter and dark energy of unknown nature, and consistent with the basic predictions of the inflationary scenario is a very good fit to a variety of cosmological probes: the anisotropy of the CMB, the large scale distribution of matter, the luminosity distance of high-redshift type Ia supernovae and ...
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We revisit the alignments of the largest structures observed in the cosmic microwave background (CMB) using the seven and nine-yearWilkinson Microwave Anisotropy Probe (WMAP) and first-year Planck data releases. The observed alignments – the quadrupole with the octopole and their joint alignment with the direction of our motion with respect to the CMB (the dipole direction) and the geometry of ...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2014
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-014-3139-1