On the microwave background anisotropies produced by nonlinear voids

Abstract

view Abstract Citations (36) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the Microwave Background Anisotropies Produced by Nonlinear Voids Arnau, J. V. ; Fullana, M. J. ; Monreal, L. ; Saez, D. Abstract The Tolman-Bondi solution of the Einstein equations is used to study the microwave background anisotropy produced by a pressureless spherical cosmological inhomogeneity. Our method improves on previous ones because it does not involve any approximating condition and it allows us to assume the following: (1) a general Friedmann-Robertson-Walker background, (2) an arbitrary relative location of the observer and the inhomogeneity, (3) either an overdense or an underdense inhomogeneity with arbitrary size, (4) an arbitrary initial energy density profile, and (5) an arbitrary amplitude of the density contrast. This general method is applied to compute the anisotropy produced by some nonlinear uncompensated density distributions, which mimic nearby voids. Publication: The Astrophysical Journal Pub Date: January 1993 DOI: 10.1086/172139 Bibcode: 1993ApJ...402..359A Keywords: Anisotropy; Cosmology; Microwaves; Relic Radiation; Universe; Astronomical Models; Computational Astrophysics; Inhomogeneity; Astrophysics; COSMOLOGY: COSMIC MICROWAVE BACKGROUND; COSMOLOGY: LARGE-SCALE STRUCTURE OF UNIVERSE; COSMOLOGY: THEORY full text sources ADS |