Located in the Zone of Avoidance, for 10 points, name this object 250 million light-years across, named for its tendency to pull galaxies toward it.
The CIZA project determined that it only has 10% of its originally postulated mass, while Bertschinger and Dekel calculated the maximum Sachs- Wolfe anisotropy due to its effects. Partly responsible for the dipole anisotropy, it was originally discovered by a group later dubbed "The Seven Samurai". This structure is associated with a filamentous redshift phenomenon known as the Fingers of God. It was found due to irregularities in the Tully- Fisher relationship, resulting in peculiar velocities of up to 700 kilometers per second in several galaxies, and it contains the Norma and Abell 3627 cluster. It lies directly in front of the Shapley Supercluster and is core is located in giant filament of dark matter called the Great Centaurus Wall. Located in the Zone of Avoidance, for 10 points, name this object 250 million light-years across, named for its tendency to pull galaxies toward it.
The CIZA project determined that it only has 10% of its originally postulated mass, while Bertschinger and Dekel calculated the maximum Sachs- Wolfe anisotropy due to its effects.
{Great Attractor}