Non-local bias and the problem of large-scale power in the Standard Cold Dark Matter model

A. Del Popolo; Y. Takahashi; H. Kiuchi; M. Gambera

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arXiv · astro-ph/9906361

Non-local bias and the problem of large-scale power in the Standard Cold Dark Matter model

A. Del Popolo·Y. Takahashi·H. Kiuchi·M. Gambera

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Abstract

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 (Omega=1, h=0.5, n=1) 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.

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A. Del Popolo, Y. Takahashi, H. Kiuchi, M. Gambera. 1999-06-23. Non-local bias and the problem of large-scale power in the Standard Cold Dark Matter model. https://arxiv.org/abs/astro-ph/9906361

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