Gravitational lens effect on anisotropies of the cosmic microwave background

Details Gravitational lens effect on anisotropies of the cosmic microwave background Gravitational lens effect on anisotropies of the cosmic microwave background

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.240..415s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 240, Sept. 15, 1989, p. 415-420.

Astronomy and Astrophysics

Astronomy

38

Angular Distribution, Gravitational Lenses, Radiation Distribution, Relic Radiation, Angular Correlation, Astronomical Models, Power Spectra

Scientific paper

The general feature of the gravitational lens effect on anisotropies of cosmic microwave background radiation is discussed. Provided that the characteristic angular scale associated with the gravitational lens effect is comparable to the coherence angle of the cosmic microwave anisotropy, it is found that the anisotropies on scales smaller than a characteristic coherence angle associated with the lens distribution may be enhanced, while those on larger scales are suppressed as usually expected. That this conclusion is physically reasonable can be rather easily understood.

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