A redshift survey of IRAS galaxies. V - The acceleration on the Local Group

Details A redshift survey of IRAS galaxies. V - The acceleration on the Local Group A redshift survey of IRAS galaxies. V - The acceleration on the Local Group

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...397..395s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 397, no. 2, p. 395-419.

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Infrared Sources (Astronomy), Local Group (Astronomy), Red Shift, Sky Surveys (Astronomy), Astronomical Models, Computational Astrophysics, Infrared Astronomy Satellite, Power Spectra, Relic Radiation

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The acceleration on the Local Group is calculated based on a full-sky redshift survey of 5288 galaxies detected by IRAS. A formalism is developed to compute the distribution function of the IRAS acceleration for a given power spectrum of initial perturbations. The computed acceleration on the Local Group points 18-28 deg from the direction of the Local Group peculiar velocity vector. The data suggest that the CMB dipole is indeed due to the motion of the Local Group, that this motion is gravitationally induced, and that the distribution of IRAS galaxies on large scales is related to that of dark matter by a simple linear biasing model.

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