The Square Kilometre Array Radio Telescope Project
Mark Waterson



The Square Kilometre Array is an ambitious project to create a new radio astronomy facility combining both dish and aperture-array technologies to provide a nominal total collecting area of 1 square Kilometre covering frequencies from VHF out to 14GHZ, targeting a wide variety of science objectives. In this talk I will describe the architecture and status of the SKA-1 Observatory which will consist of two radio telescope systems, a 50-350 MHz low-frequency aperture array (SKa1-Low) in Western Australia, and a mid-frequency array of ~190 dishes in South Africa covering 0.35-13.8 GHz in 5 bands. The Dish array (SKA1-Mid) will primarily address detection and precision timing of radio pulsars, high sensitivity observations of continuum objects and spectral lines including the 21-cm hyperfine line of neutral hydrogen from the local Universe, while the SKA1-Low telescope will prioritize imaging and spectral observations of the highly red-shifted 21 cm hydrogen from the Epoch of Reionization and earlier, and will also be well suited for low radio frequency observations of pulsars, magnetized plasmas both in the Galaxy and intergalactic space, radio recombination lines, and potentially extrasolar planets. To illustrate some of the current and future capabilities of these telescopes I will discuss a recently released survey of the southern radio sky done with the Murchison Widefield Array (MWA - GLEAM) and some active research topics which illustrate the synergies between radio and optical observations.