Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334....6f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 334, Nov. 1, 1988, p. 6-13. MPI-supported research.
Astronomy and Astrophysics
Astronomy
13
Background Radiation, Extraterrestrial Radiation, Far Infrared Radiation, Infrared Sources (Astronomy), Space Density, Anisotropy, Density Wave Model, Infrared Astronomy Satellite
Scientific paper
The author provides comparative, theoretical analyses of the large-scale anisotropies in the intensity of an extragalactic integrated background (ΔI/I) and in the N(S) source counts (ΔN/N). It is assumed that such anisotropies are generated by small-amplitude density fluctuations on length scales exceeding the Local Supercluster radius, and special reference is made to the far-infrared background and to the IRAS source counts. It is shown that both ΔI/I and ΔN/N are determined by fluctuations in the source number density and by the Doppler shifts generated by the cosmic matter density perturbations.
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