SKA Engineering Change Proposal: Gridded Visibilities to Enable Precision Cosmology with Radio Weak Lensing

Abstract

This document was submitted as supporting material to an Engineering Change Proposal (ECP) for the Square Kilometre Array (SKA). This ECP requests gridded visibilities as an extra imaging data product from the SKA, in order to enable bespoke analysis techniques to measure source morphologies to the accuracy necessary for precision cosmology with radio weak lensing. We also discuss the properties of an SKA weak lensing data set and potential overlaps with other cosmology science goals.

Comments welcome. 4 pages, 3 figures. Progress can be tracked at the SKA ECP register https://skaoffice.atlassian.net/wiki/display/EP/ECP+Register

Cited by in corpus (5)

• Extending cosmological tests of General Relativity with the Square Kilometre Array
• SKA Weak Lensing I: Cosmological Forecasts and the Power of Radio-Optical Cross-Correlations
• SKA Weak Lensing II: Simulated Performance and Survey Design Considerations
• Radio Weak Lensing Shear Measurement in the Visibility Domain - II. Source Extraction
• Radio Galaxy Shape Measurement with Hamiltonian Monte Carlo in the Visibility Domain