The Murchison Widefield Array Real-Time System

Details The Murchison Widefield Array Real-Time System The Murchison Widefield Array Real-Time System

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1103m&link_type=abstract

American Astronomical Society, AAS Meeting #211, #11.03; Bulletin of the American Astronomical Society, Vol. 39, p.744

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The Murchison Widefield Array (MWA) is a next-generation radio telescope being built in Australia to study the early universe, the sun, space weather, and time variability of the radio sky. The real-time data processing back-end of the MWA must calibrate and image the output of a 512-antenna correlator, in 4096 frequency channels and 4 polarizations, reducing 16 GB/s (1.4 Peta-Bytes/day) of input visibilities to images that can be stored for off-line science processing. The real-time system consists of a visibility integrator, a system to measure ionospheric and instrumental effects towards many point sources, all-sky ionospheric and instrumental calibration systems, and an imaging pipeline, which incorporates gridding, imaging, image de-distortion, Stokes conversion, and coordinate conversion. All of these will run in software on a tera-flop computing cluster. Here we present an overview of the real-time system and the main data products it provides to the science packages.

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