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Magnification as a Tool in Weak Lensing · Around

2010

Magnification as a Tool in Weak Lensing

Vallinotto, Alberto, Dodelson, Scott, Zhang, Pengjie

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Weak lensing surveys exploit measurements of galaxy ellipticities.

These measurements are subject to errors which degrade the cosmological information that can be extracted from the surveys.
Here we propose a way of using the galaxy data themselves to calibrate the measurement errors.
In particular, the cosmic shear field, which causes the galaxies to appear elliptical, also changes their sizes and fluxes.

Built on

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