M. Plionis, S. Basilakos, M. Rowan-Robinson, S. J. Maddox, S. J. Oliver, O. Keeble, W. Saunders
Monthly Notices of the Royal Astronomical Society, Volume 313, Issue 1, March 2000, Pages 8–12
Publication year: 2000

Summary 

Comparing the gravitational acceleration induced on the Local Group of galaxies by different tracers of the underlying density field we estimate, within the linear gravitational instability theory and the linear biasing ansatz, their relative bias factors. Using optical SSRS2 galaxies, IRAS (PSCz) galaxies and Abell/ACO clusters, we find bO,I ≈ 1.21±0.06 and bC,I≈4.3±0.8, in agreement with other recent studies. Finally, there is an excellent one-to-one correspondence of the PSCz and Abell/ACO cluster dipole profiles, once the latter is rescaled by bC,I, out to at least ∼150 h−1 Mpc.