Jv. Arnau et al., GREAT ATTRACTOR-LIKE STRUCTURES AND LARGE-SCALE ANISOTROPY, Monthly Notices of the Royal Astronomical Society, 268(1), 1994, pp. 17-21
The effect on the cosmic microwave background of isolated Great Attrac
tor-like objects is numerically computed. The code is based on the Tol
man-Bondi solution of the Einstein equations. The background is assume
d to be an open universe. The density parameter OMEGA0 is varied from
0.15 to 0.4. Great Attractor-like structures are placed at redshifts b
etween 2 and 30. As a result of the chosen backgrounds and locations,
these structures produce pure gravitational spots with amplitudes appr
oximately 10(-5) and angular sizes of a few degrees. A significant par
t of the large-scale anisotropy of the microwave background could be p
roduced by these spots. This fact highlights the need for important mo
difications of the current ideas about anisotropy production on large
angular scales.