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Science with ASKAP: the Australian square-kilometre-array pathfinder

Johnston, S. and Taylor, R. and Bailes, M. and Bartel, N. and Baugh, C. and Bietenholz, M. and Blake, C. and Braun, R. and Brown, J. and Chatterjee, S. and Darling, J. and Deller, A. and Dodson, R. and Edwards, P. and Ekers, R. and Ellingsen, S. and Feain, I. and Gaensler, B. and Haverkorn, M. and Hobbs, G. and Hopkins, A. and Jackson, C. and James, C. and Joncas, G. and Kaspi, V. and Kilborn, V. and Koribalski, B. and Kothes, R. and Landecker, T. and Lenc, A. and Lovell, J. and Macquart, J.-P. and Manchester, R. and Matthews, D. and McClure-Griffiths, N. and Norris, R. and Pen, U.-L. and Phillips, C. and Power, C. and Protheroe, R. and Sadler, E. and Schmidt, B. and Stairs, I. and Staveley-Smith, L. and Stil, J. and Tingay, S. and Tzioumis, A. and Walker, M. and Wall, J. and Wolleben, M. (2008) Science with ASKAP: the Australian square-kilometre-array pathfinder. Experimental Astronomy, 22 (3). pp. 151-273. ISSN 0922-6435. https://resolver.caltech.edu/CaltechAUTHORS:20090512-073528268

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Abstract

The future of cm and m-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries. The SKA will be 50 times more sensitive than any existing radio facility. A majority of the key science for the SKA will be addressed through large-area imaging of the Universe at frequencies from 300 MHz to a few GHz. The Australian SKA Pathfinder (ASKAP) is aimed squarely in this frequency range, and achieves instantaneous wide-area imaging through the development and deployment of phase-array feed systems on parabolic reflectors. This large field-of-view makes ASKAP an unprecedented synoptic telescope poised to achieve substantial advances in SKA key science. The central core of ASKAP will be located at the Murchison Radio Observatory in inland Western Australia, one of the most radio-quiet locations on the Earth and one of the sites selected by the international community as a potential location for the SKA. Following an introductory description of ASKAP, this document contains 7 chapters describing specific science programmes for ASKAP. In summary, the goals of these programmes are as follows: The detection of a million galaxies in atomic hydrogen emission across 75% of the sky out to a redshift of 0.2 to understand galaxy formation and gas evolution in the nearby Universe. The detection of synchrotron radiation from 60 million galaxies to determine the evolution, formation and population of galaxies across cosmic time and enabling key cosmological tests. The detection of polarized radiation from over 500,000 galaxies, allowing a grid of rotation measures at 10' to explore the evolution of magnetic fields in galaxies over cosmic time. The understanding of the evolution of the interstellar medium of our own Galaxy and the processes that drive its chemical and physical evolution. The high-resolution imaging of intense, energetic phenomena by enlarging the Australian and global Very Long Baseline networks. The discovery and timing of a thousand new radio pulsars. The characterization of the radio transient sky through detection and monitoring of transient sources such as gamma ray bursts, radio supernovae and intra-day variables.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/s10686-008-9124-7DOIArticle
https://link.springer.com/article/10.1007%2Fs10686-008-9124-7PublisherArticle
http://rdcu.be/xCzaPublisherFree ReadCube Access
ORCID:
AuthorORCID
Gaensler, B.0000-0002-3382-9558
Macquart, J.-P.0000-0001-6763-8234
Additional Information:© Springer Science + Business Media B.V. 2008. Received: 8 April 2008. Accepted: 20 August 2008. Published online: 28 October 2008.
Subject Keywords:Radio astronomy techniques; Radio telescopes; Square kilometre array; Very long baseline interferometry; Extragalactic HI; Radio continuum surveys; Cosmological evolution; Galaxy formation; Star formation; Rotation measure; Extragalactic radio source polarization; Galactic structure; Galactic magnetic field; Magellenic clouds; Pulsars; Radio transient sources; Gamma-ray bursters; Intra-day variability
Issue or Number:3
Record Number:CaltechAUTHORS:20090512-073528268
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20090512-073528268
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14198
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 May 2009 23:23
Last Modified:03 Oct 2019 00:47

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