Generation of microwave background fluctuations from nonlinear perturbations at the ERA of galaxy formation

Details Generation of microwave background fluctuations from nonlinear perturbations at the ERA of galaxy formation Generation of microwave background fluctuations from nonlinear perturbations at the ERA of galaxy formation

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...306l..51o&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 306, July 15, 1986, p. L51-L54.

Astronomy and Astrophysics

Astrophysics

186

Background Radiation, Galactic Evolution, Interstellar Gas, Microwave Emission, Astronomical Models, Dark Matter, Gas Dynamics, Nonlinear Systems, Perturbation, Universe

Scientific paper

The production of temperature distortions of the microwave background by primordial galaxy formation is investigated theoretically. The temperature anisotropies induced by the presence of hot ionized gas during the formation of structure are roughly approximated and found to be greater than the initial anisotropies predicted by hierarchical models, and close to the present upper limit (delta (T/T = about 0.00001 at angular scale 1 arcmin) for standard cold-dark-matter models with Omega(0) = Omega(b) = H/(100 km/s) = 1. It is suggested that sensitive small-scale microwave-fluctuation measurements can impose significant constraints on models of primordial galaxy formation.

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