期刊
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
卷 30, 期 -, 页码 -出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/pasa.2012.007
关键词
instrumentation: interferometers; techniques: image processing; techniques: interferometric-radio continuum: general; radio lines: general; early Universe
资金
- U.S. National Science Foundation [AST CAREER-0847753, AST-0457585, AST-0908884, PHY-0835713]
- Australian Research Council [LE0775621, LE0882938]
- U.S. Air Force Office of Scientific Research [FA9550-0510247]
- Centre for All-sky Astrophysics (an Australian Research Council Centre of Excellence) [CE110001020]
- New Zealand Ministry of Economic Development [MED-E1799]
- IBM Shared University Research Grant (via VUW)
- Smithsonian Astrophysical Observatory
- MIT School of Science
- Raman Research Institute
- Australian National University
- Victoria University of Wellington
- Australian Federal government via the National Collaborative Research Infrastructure Strategy, Education Investment Fund
- Australia-India Strategic Research Fund
- Astronomy Australia Limited
- iVEC Petabyte Data Store
- Initiative in Innovative Computing
- NVIDIA
- International Centre for Radio Astronomy Research
- Joint Venture of Curtin University
- The University of Western Australia
- Western Australian State government
- IBM Shared University Research Grant (via Curtin)
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0847753] Funding Source: National Science Foundation
The Murchison Widefield Array (MWA) is one of three Square Kilometre Array Precursor telescopes and is located at the Murchison Radio-astronomy Observatory in the Murchison Shire of the mid-west of Western Australia, a location chosen for its extremely low levels of radio frequency interference. The MWA operates at low radio frequencies, 80-300 MHz, with a processed bandwidth of 30.72 MHz for both linear polarisations, and consists of 128 aperture arrays (known as tiles) distributed over a similar to 3-km diameter area. Novel hybrid hardware/software correlation and a real-time imaging and calibration systems comprise the MWA signal processing backend. In this paper, the as-built MWA is described both at a system and sub-system level, the expected performance of the array is presented, and the science goals of the instrument are summarised.
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