Geoffrey Bower (ASIAA)

Title:  Intensity Mapping with the YT Lee Array

Abstract:  Molecular gas is an important probe of galaxy evolution and the growth of structure throughout the history of the Universe.  Large interferometric arrays such as ALMA and the VLA are providing powerful insights into the most massive and most luminous of these objects.  But the bulk of galaxies and molecular gas will remain undetected by these telescopes.  The technique of intensity mapping can provide a statistical detection of the integrated luminosity function of all galaxies through low resolution mapping.  The YT Lee Array (formerly known as AMiBA) is a 13-element millimeter wavelength interferometer.  I will describe why the YTLA is ideal for these measurements and the technical development of a digital correlator and new intermediate frequency system that will make intensity mapping possible.