Galaxy Correlation in a Bubbly Universe

Details Galaxy Correlation in a Bubbly Universe Galaxy Correlation in a Bubbly Universe

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pkas....7...25r&link_type=abstract

Publications of the Korean Astronomical Society, vol.7, no.1, p.25-30

Astronomy and Astrophysics

Astronomy

Scientific paper

Recent redshift surveys suggest that most galaxies may be distributed on the surfaces of bubbles surrounding large voids. To investigate the quantitive consistency of this qualitative picture of large-scale structure, we study analytically the clustering properties of galaxies in a universe filled with spherical shells. In this paper, we report the results of the calculations for the spatial and angular two-point correlation functions of galaxies. With ~20% of galaxies in clusters and a power law distribution of shell sizes, nsh(r) ~ R^-alpha, alpha ~ 4, the observed slope and amplitude of the spatial two-point correlation function Xi gg(r) can be reproduced. (It has been shown that the same model parameters reproduce the enhanced cluster two-point correlation function, Xi cc(r).) The corresponding angular two point correlation function w(theta) is calculated using the relativistic form of Limber's equation and the Schecter type luminosity function. The calculated w(theta) agrees with the observed one quite well on small separations(theta < 2 deg.)

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