1k citations · 4.9k across the 40 of their papers we have counts for
5 papers · 1 filter
On lensing by a cosmological constant
Fergus Simpson, John A. Peacock, Alan F. Heavens
Several recent papers have suggested that the cosmological constant Lambda directly influences the gravitational deflection of light. We place this problem in a cosmological contex…
An Alternative Approach to Holographic Dark Energy
Fergus Simpson
Here we consider a scenario in which dark energy is associated with the apparent area of a surface in the early universe. In order to resemble the cosmological constant at late tim…
The Redshift Sensitivities of Dark Energy Surveys
Fergus Simpson, Sarah Bridle
Great uncertainty surrounds dark energy, both in terms of its physics, and the choice of methods by which the problem should be addressed. Here we quantify the redshift sensitiviti…
Observing Baryon Oscillations with Cosmic Shear
Fergus Simpson
A cosmic shear survey, spanning a significant proportion of the sky, should greatly improve constraints on a number of cosmological parameters. It also provides a unique opportunit…
Illuminating Dark Energy with Cosmic Shear
Fergus Simpson, Sarah Bridle
One of the principal goals of modern cosmology is to constrain the properties of dark energy. At present, numerous surveys are aiming to determine the equation of state, which is a…