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Open AccessJournal ArticleDOI

Efficient Computation of CMB anisotropies in closed FRW models

TLDR
In this paper, an efficient line-of-sight method was used to calculate the anisotropy and polarization of the cosmic microwave background for scalar and tensor modes in almost-Friedmann-Robertson-Walker models with positive spatial curvature.
Abstract
We implement the efficient line of sight method to calculate the anisotropy and polarization of the cosmic microwave background for scalar and tensor modes in almost-Friedmann-Robertson-Walker models with positive spatial curvature. We present new results for the polarization power spectra in such models.

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Planck 2015 results - XIII. Cosmological parameters

Peter A. R. Ade, +337 more
TL;DR: In this article, the authors present a cosmological analysis based on full-mission Planck observations of temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation.
Journal ArticleDOI

Planck 2015 results. XIII. Cosmological parameters

Peter A. R. Ade, +260 more
TL;DR: In this paper, the authors present results based on full-mission Planck observations of temperature and polarization anisotropies of the CMB, which are consistent with the six-parameter inflationary LCDM cosmology.
Journal ArticleDOI

Planck 2013 results. XVI. Cosmological parameters

Peter A. R. Ade, +327 more
TL;DR: In this paper, the authors present the first cosmological results based on Planck measurements of the cosmic microwave background (CMB) temperature and lensing-potential power spectra, which are extremely well described by the standard spatially-flat six-parameter ΛCDM cosmology with a power-law spectrum of adiabatic scalar perturbations.
Journal ArticleDOI

Planck 2013 results. XVI. Cosmological parameters

Peter A. R. Ade, +262 more
TL;DR: In this paper, the authors present the first results based on Planck measurements of the CMB temperature and lensing-potential power spectra, which are extremely well described by the standard spatially-flat six-parameter LCDM cosmology.
References
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Journal ArticleDOI

Gauge Invariant Cosmological Perturbations

TL;DR: The physical interpretation of perturbations of homogeneous, isotropic cosmological models in the early Universe, when the perturbation is larger than the particle horizon, is clarified by defining a complete set of gauge-invariant variables as discussed by the authors.
Journal ArticleDOI

A Line of sight integration approach to cosmic microwave background anisotropies

TL;DR: In this article, the authors present a new method for calculating linear cosmic microwave background (CMB) anisotropy spectra based on integration over sources along the photon past light cone.
Journal ArticleDOI

Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges

TL;DR: In this article, the authors present a systematic treatment of the linear theory of scalar gravitational perturbations in the synchronous gauge and the conformal Newtonian (or longitudinal) gauge.
Journal ArticleDOI

Signature of Gravity Waves in the Polarization of the Microwave Background

TL;DR: Using spin-weighted decomposition of polarization in the cosmic microwave background (CMB), this article showed that a particular combination of Stokes $Q$ and $U$ parameters vanishes for primordial fluctuations generated by scalar modes, but does not for those generated by primordial gravity waves.
Journal ArticleDOI

A Probe of Primordial Gravity Waves and Vorticity

TL;DR: In this article, a formalism for describing an all-sky map of the polarization of the cosmic microwave background is presented, which allows unambiguous identification of long-wavelength gravity waves or large-scale vortical flows at the time of last scattering.
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Planck 2015 results. XIII. Cosmological parameters

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