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Cosmological constraints from COMBO-17 using 3D weak lensing
T. D. Kitching, A. F. Heavens, A. N. Taylor +5
We present the first application of the 3D cosmic shear method developed in Heavens et al. (2006) and the geometric shear-ratio analysis developed in Taylor et al. (2006), to the C…
Weak gravitational shear and flexion with polar shapelets
Richard Massey, Barnaby Rowe, Alexandre Refregier +2
We derive expressions, in terms of "polar shapelets", for the image distortion operations associated with weak gravitational lensing. Shear causes galaxy shapes to become elongated…
Probing dark energy with the shear-ratio geometric test
A. N. Taylor, T. D. Kitching, D. J. Bacon +1
We adapt the Jain--Taylor (2003) shear-ratio geometric lensing method to measure the dark energy equation of state, and its time derivative from dark matter haloes in cosmologies w…