weak lensing toy universe

In a small stint of research time today I worked on a document expressing ideas about weak lensing with Marshall. We keep writing documents, but never a paper! I think we have a good idea now, which is to fully implement Yike Tang's work on lensing inference in a toy universe, showing that good galaxy shape estimators don't necessarily lead to good shear estimators, and good shear estimators don't necessarily lead to good cosmological parameter estimators. Solution: Use probability theory and a full hierarchical model to do it all in one shot. Working in a toy universe makes it all tractable for now; in the real Universe with real data this will be somewhat computationally expensive.

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