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Measuring Galaxy Bias from the High-Order Correlation Functions

Published online by Cambridge University Press:  25 May 2016

Y.P. Jing*
Affiliation:
Research Center for the Early Universe, University of Tokyo Bunkyo-ku, Tokyo 113, Japan

Abstract

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In this talk, I will show how to determine the biasing factor b from the high-order moments of galaxies. The determination is based on the analytical modeling of primordial peaks and virialized halos and is independent of the currently unknown density parameter Ω0 and other cosmological parameters. The observed high-oder moments of the APM galaxies require that the biasing factor b be very close to 1, i.e. the optical galaxies are an unbiased tracer of the underlying mass distribution (on quasilinear scale). The theoretical argument can be easily generalized to the three-point correlation function and the bispectrum both of which can used as further observational tests to the important conclusion of b ≈ 1 drawn from the high-order moments. Finally I present our preliminary results of the three-point correlation functions for the Las Campanas Redshift Survey.

Type
IV. Structure Formation and Dark Matter
Copyright
Copyright © Kluwer 1999 

References

Catelan, P., Lucchin, F., Matarrese, S., Porciani, C. 1997, MNRAS (submitted); astro-ph/9708067 Google Scholar
Efstathiou, G., & Jedrzejewski, R.I. 1984, Adv. Space Res., 3, 379 Google Scholar
Efstathiou, G., Sutherland, W.J., Maddox, S.J., 1990, Nat, 348, 705 Google Scholar
Fry, J.N., 1984, ApJ, 279, 499 Google Scholar
Gaztanaga, E., 1994, MNRAS, 268, 913 CrossRefGoogle Scholar
Gaztanaga, E., Croft, R.A.C., Dalton, G.B., 1995, MNRAS, 276, 336 Google Scholar
Gaztanaga, E., Frieman, J.A., 1994, ApJ, 437, L13 Google Scholar
Jing, Y.P. 1997, in preparation Google Scholar
Jing, Y.P., Zhang, J.L., 1989, ApJ, 342, 639 CrossRefGoogle Scholar
Jing, Y.P., Börner, G. 1997, A&A, 318, 667 Google Scholar
Jing, Y.P., Börner, G. 1997, in preparation Google Scholar
Matarrese, S., Verde, L., Heavens, A. 1997, MNRAS (in press); astro-ph/9706059 Google Scholar
Matsubara, T., Suto, Y., 1994, ApJ, 420, 497 Google Scholar
Mo, H.J., White, S.D.M., 1996, MNRAS, 282, 347 Google Scholar
Mo, H.J., Jing, Y.P., White, S.D.M., 1997, MNRAS, 284, 189 Google Scholar
Peebles, P.J.E., 1980, The Large-Scale Structure of the Universe, Princeton University Press, Princeton Google Scholar
Suto, Y., 1993, Prog. Theor. Phys. 90, 1173 Google Scholar