Astronomy without a telescope -- Through a lens darkly
Monday, December 6, 2010 - 14:00
in Astronomy & Space
Massive galactic clusters which are roughly orientated in a plane that is roughly face-on to Earth can generate strong gravitational lensing. However, several surveys of such clusters have reached the conclusion that these clusters have a tendency towards lensing too much at least more than is predicted based on their expected mass.