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Shapelets "multiple multipole" shear measurement methods
Richard Massey, Alexandre Refregier, David Bacon
The measurement of weak gravitational lensing is currently limited to a precision of ~10% by instabilities in galaxy shape measurement techniques and uncertainties in their calibra…
Polar Shapelets
Richard Massey, Alexandre Refregier
The shapelets method for image analysis is based upon the decomposition of localised objects into a series of orthogonal components with convenient mathematical properties. We exte…
Supernova / Acceleration Probe: A Satellite Experiment to Study the Nature of the Dark Energy
SNAP Collaboration, G. Aldering, W. Althouse +109
The Supernova / Acceleration Probe (SNAP) is a proposed space-based experiment designed to study the dark energy and alternative explanations of the acceleration of the Universe's…
An Enlarged Cosmic Shear Survey with the William Herschel Telescope
Richard Massey, Alexandre Refregier, David J. Bacon +2
We report the results of a cosmic shear survey using the 4.2m William Herschel Telescope on La Palma, to a depth of R=25.8 (z~0.8), over 4 square degrees. The shear correlation fun…
Probing Dark Matter and Dark Energy with Space-Based Weak Lensing
Richard Massey, Alexandre Refregier, Jason Rhodes
Weak lensing provides a direct measure of the distribution of mass in the universe, and is therefore a uniquely powerful probe of dark matter. Weak lensing can also be used to meas…