Non-local bias and the problem of large-scale power in the Standard Cold Dark Matter model
A. Del Popolo 1,2,
Y. Takahashi 3,
H. Kiuchi 3 and
M. Gambera 1,4
Received 4 January 1999 / Accepted 25 May 1999
We study the effect of non-radial motions, originating from the gravitational interaction of the quadrupole moment of a protogalaxy with the tidal field of the matter of the neighboring protostructures, on the angular correlation function of galaxies. We calculate the angular correlation function using a Standard Cold Dark Matter (hereafter SCDM) model (, h=0.5, ) and we compare it with the angular correlation function of the APM galaxy survey (Maddox et al. 1990; Maddox et al. 1996). We find that taking account of non-radial motions in the calculation of the angular correlation function gives a better agreement of the theoretical prediction of the SCDM model to the observed estimates of large-scale power in the galaxy distribution.
Key words: cosmology: theory cosmology: large-scale structure of Universe galaxies: formation
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© European Southern Observatory (ESO) 1999
Online publication: August 13, 199