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Figures of Merit for Testing Standard Models: Application to Dark Energy Experiments in Cosmology
Adam Amara, Thomas Kitching
Given a standard model to test, an experiment can be designed to: (i) measure the standard model parameters; (ii) extend the standard model; or (iii) look for evidence of deviation…
Weak Lensing Mass Reconstruction: Flexion vs Shear
S. Pires, A. Amara
Weak gravitational lensing has proven to be a powerful tool to map directly the distribution of dark matter in the Universe. The technique, currently used, relies on the accurate m…
Gravitational Lensing Accuracy Testing 2010 (GREAT10) Challenge Handbook
Thomas Kitching, Sreekumar Balan, Gary Bernstein +32
GRavitational lEnsing Accuracy Testing 2010 (GREAT10) is a public image analysis challenge aimed at the development of algorithms to analyze astronomical images. Specifically, the…
Constraints on Small-Scale Structures of Dark Matter from Flux Anomalies in Quasar Gravitational Lenses
R. Benton Metcalf, Adam Amara
We investigate the statistics of flux anomalies in gravitationally lensed QSOs as a function of dark matter halo properties such as substructure content and halo ellipticity. We do…
Cosmic shear requirements on the wavelength-dependence of telescope point spread functions
E. S. Cypriano, A. Amara, L. M. Voigt +5
Cosmic shear requires high precision measurement of galaxy shapes in the presence of the observational Point Spread Function (PSF) that smears out the image. The PSF must therefore…
Euclid Imaging Consortium Science Book
A. Refregier, A. Amara, T. D. Kitching +3
The energy density of the Universe is dominated by dark energy and dark matter, two mysterious components which pose some of the most important questions in fundamental science tod…