Publication: PAPER configuration and sensitivity

Title: A Sensitivity and Array-configuration Study for Measuring the Power Spectrum of 21 cm Emission from Reionization

sensitivity_I_summary_figurePAPER will soon be performing long integrations to the power spectrum of high redshift Hydrogen.  What is the best configuration?  In the process of answering this question we also carefully (re) derive the relationship between the output of an interferometer and the power spectrum. This settled (for us) some open questions about units and hopefully is another step towards building a stable bridge between theory and measurement.  However the takeaway is that, in the limit of a sensitivity starved interferometer trying to detect Fourier modes, a grid configuration can gain almost an order of magnitude in sensitivity.

Arxiv, pdf