The effect of gravitational lensing on the texture of the cosmic microwave background

Details The effect of gravitational lensing on the texture of the cosmic microwave background The effect of gravitational lensing on the texture of the cosmic microwave background

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...284..719c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 284, no. 3, p. 719-723

Computer Science

Numerical Analysis

5

Angular Distribution, Background Radiation, Extraterrestrial Radio Waves, Gravitational Lenses, Microwaves, Radio Astronomy, Textures, Anisotropic Media, Astronomical Models, Galactic Evolution, Normal Density Functions, Numerical Analysis, Power Spectra, Temperature Distribution

Scientific paper

We analyse the influence of gravitational lensing on some statistical descriptors of the texture of the Cosmic Microwave Background (CMB) data. Those quantities depend on the coherence angle of the temperature fluctuations, for which we present calculations. The result of gravitational lensing is a decrease in the coherence angle for popular models of galaxy formation. As a consequence the statistical descriptors studied could be increased by a 70% for present experiments operating at arcmin scales.

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