Presentation at HPC in the Cloud: the SKA example workshop
A GLEAM in our eyes: data processing for current and future radio astronomy
The Murchison Widefield Array (MWA) is the first operational SKA
precursor, observing the Southern sky over the low frequency band of
75–300 MHz. I am leading the GaLactic and Extragalactic MWA (GLEAM)
survey effort to detect and characterise over half a million radio sources
and create a complete sky model for SKA calibration. The computational
cost is demanding: 3 million CPU-hours for calibration and image-creation
alone, and the pipeline-processing of over a petabyte of data. Yet, the
MWA is less than a percent of the estimated size of SKA-low. I will
explain the methods we have used, from correlation through calibration, up
to wide-field imaging, and what will and won’t scale to the SKA challenge.
Dr. Natasha Hurley-Walker
Dr. Hurley- Walker is the Murchison Widefield Array (MWA) Galactic and Extra-Galactic Project Scientist and Head of the Supernova Remnants team, International Centre for Radio Astronomy Research (ICRAR), Perth, Australia.
Dr. Hurley-Walker’s page at ICRAR
List of Publications – Curtin Institute of Radio Astronomy.