Large-Scale Anisotropy of the Cosmic Background Radiation Due to Primordial Density and Gravitational-Wave Perturbations

Details Large-Scale Anisotropy of the Cosmic Background Radiation Due to Primordial Density and Gravitational-Wave Perturbations Large-Scale Anisotropy of the Cosmic Background Radiation Due to Primordial Density and Gravitational-Wave Perturbations

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pthph..69..828t&link_type=abstract

Progress of Theoretical Physics, Vol. 69, No. 3, pp. 828-841

Physics

12

Scientific paper

The possibility that part of the recently discoverd large-scale anisotropy of the cosmic background radiation is aroused from primordial density and gravitational-wave perturbations through the Sachs-Wolfe effect, is investigated in both closed and open models in connection with the severe constraint for the small-scale anisotropy. It is concluded that, in order to explain the dipole anisotropy of the order of 10-3 by density perturbations, closed models and density fluctuation spectrums not steeper than ``white noise'' one are required, and that gravitational-wave perturbations cannot contribute to the possible quadrupole anisotropy of the order of 10-4.

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