CMB anisotropies at second-order II: analytical approach
- 1 January 2007
- journal article
- Published by IOP Publishing in Journal of Cosmology and Astroparticle Physics
- Vol. 2007 (01) , 019
Abstract
We provide an analytical approach to the second-order cosmic microwave background (CMB) anisotropies generated by the non-linear dynamics taking place at last scattering. We study the acoustic oscillations of the photon–baryon fluid in the tight coupling limit and we extend at second order the Meszaros effect. We allow for a generic set of initial conditions due to primordial non-Gaussianity and we compute all of the additional contributions arising at recombination. Our results are useful to provide the full second-order radiation transfer function at all scales necessary for establishing the level of non-Gaussianity in the CMB.Keywords
All Related Versions
This publication has 47 references indexed in Scilit:
- Fluctuating annihilation cross sections and the generation of density perturbationsPhysical Review D, 2005
- CMB lensing extraction and primordial non-GaussianityPhysical Review D, 2005
- CMB 3-point functions generated by nonlinearities at recombinationPhysical Review D, 2004
- Cosmological perturbations from inhomogeneous reheating, freeze-out, and mass dominationPhysical Review D, 2004
- Non-Gaussianity in the curvaton scenarioPhysical Review D, 2004
- Non-Gaussianity in multifield inflationPhysical Review D, 2002
- Generating the curvature perturbation without an inflatonPhysics Letters B, 2002
- Particle physics models of inflation and the cosmological density perturbationPhysics Reports, 1999
- Analytic approach to the polarization of the cosmic microwave background in flat and open universesPhysical Review D, 1995
- Anisotropies in the cosmic microwave background: an analytic approachThe Astrophysical Journal, 1995