Imprints of galaxy clustering evolution on delta T/T

Details Imprints of galaxy clustering evolution on delta T/T Imprints of galaxy clustering evolution on delta T/T

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...436....1m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-367X), vol. 436, no. 1, p. 1-4

Astronomy and Astrophysics

Astrophysics

19

Cosmic Noise, Galactic Clusters, Galactic Evolution, Gravitational Effects, Mathematical Models, Red Shift, Statistical Distributions, Temperature, Anisotropy, Celestial Bodies, Microwaves, Universe

Scientific paper

The nonlinear evolution of matter clustering induces temperature anisotropies in the cosmic microwave background. The fluctuations in temperature are produced at a relatively low redshift, z approximately less than 10, and consequently are not affected by the uncertain reionization processes that occurred at earlier epochs. The amplitude of the effect depends on the evolution model assumed for galaxy clustering. For plausible parameter choices, the temperature fluctuations are in the range 10-6 approximately less than delta T/T approximately less than 10-5. Observed limits on delta T/T would be violated if nonlinear clustering on present cluster scales commenced prior to z approximately 10.

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