Abstract
view Abstract Citations (55) References (11) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Large-scale anisotropy of the cosmic microwave background radiation Silk, J. ; Wilson, M. L. Abstract Inhomogeneities in the large-scale distribution of matter inevitably lead to the generation of large-scale anisotropy in the cosmic background radiation. The dipole, quadrupole, and higher order fluctuations expected in an Einstein-de Sitter cosmological model have been computed. The dipole and quadrupole anisotropies are comparable to the measured values, and impose important constraints on the allowable spectrum of large-scale matter density fluctuations. A significant dipole anisotropy is generated by the matter distribution on scales greater than approximately 100 Mpc. The large-scale anisotropy is insensitive to the ionization history of the universe since decoupling, and cannot easily be reconciled with a galaxy formation theory that is based on primordial adiabatic density fluctuations. Publication: The Astrophysical Journal Pub Date: March 1981 DOI: 10.1086/183475 Bibcode: 1981ApJ...244L..37S Keywords: Anisotropy; Background Radiation; Cosmic Rays; Cosmology; Extraterrestrial Radiation; Microwaves; Galactic Evolution; Matter (Physics); Quadrupoles; Universe; Space Radiation full text sources ADS |
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