Figure 10

Figure 10: Secondary anisotropies from the proper motion of galaxy clusters across the sky and Rees-Sciama effects are presented in the upper-left image over 8o× 8o in a critically closed Cold Dark Matter model. The corresponding column density of matter over the same region ( z = 0.43 , Dz = 0.025 ) is displayed in the upper-right, clearly showing the dipolar nature of the proper motion effect. Anisotropies arising from decaying potentials in an open _O_ = 0.3 model over a scale of 8o × 8o are shown in the bottom left image, along with the gravitational potential over the same region ( z = 0.33 , Dz = 0.03 ) in the bottom right, demonstrating a clear anti-correlation. Maximum temperature fluctuations in each simulation are DT /T = (5 × 10- 7, 1.0 × 10- 6) respectvely. Secondary anisotropies are dominated by decaying potentials at large scales, but all three sources (decaying potential, proper motion, and R-S) produce signatures of order 10 -6 .