Constraining dark energy from the abundance of weak gravitational lenses
Constraining dark energy from the abundance of weak gravitational lenses
We examine the prospect of using the observed abundance of weak gravitational lenses to constrain the equation-of-state parameter w = p/ρ of dark energy. Dark energy modifies the distance-redshift relation, the amplitude of the matter power spectrum, and the rate of structure growth. As a result, it affects the efficiency …