Science with the Australian Square Kilometre Array Pathfinder

By Simon Johnston, et al.. Publications Astronomical Society of Australia, 2007

214 citations recorded by the source corpus.

Abstract The future of centimetre and metre-wave astronomy lies with the Square Kilometre Array (SKA), a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than any existing radio facility. Most of the key science for the SKA will be addressed through large-area imaging of the Universe at frequencies from a few hundred MHz to a few GHz. The Australian SKA Pathfinder (ASKAP) is a technology demonstrator aimed in the mid-frequency range, and achieves instantaneous wide-area imaging through the development and deployment of phased-array feed systems on parabolic reflectors. The large field-of-view makes ASKAP an unprecedented synoptic telescope that will make substantial advances in SKA key science. 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 two sites selected by the international community as a potential location for the SKA. In this paper, we outline an ambitious science program for ASKAP, examining key science such as understanding the evolution, formation and population of galaxies including our own, understanding the magnetic Universe, revealing the transient radio sky and searching for gravitational waves.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/cf1dfe62d584653ab3e06f5acdc215418f860727

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Citations in the corpus

The GALEX Arecibo SDSS Survey - VIII. Final data release. The effect of group environment on the gas content of massive galaxies (2013, methodology): “All-sky Hi-blind surveys planned with the Australian Square Kilometer Array (SKA) Pathfinder (ASKAP; Johnston et al. 2007) and the upgraded Westerbork Synthesis Radio Telescope (APERTIF; Verheijen et al. 2008), will provide larger samples and much better spatial resolution.”
Pan-STARRS1 DISCOVERY OF TWO ULTRALUMINOUS SUPERNOVAE AT z ≈ 0.9 (2011, background): “…only the future combination of deep optical time-domain searches with the Large Synoptic Survey Telescope (LSST; Ivezic et al. 2008) and accompanying 14 blind radio transient surveys with the Australian Square Kilometre Array Pathfinder (ASKAP; Johnston et al. 2007) will fully test this hypothesis.”
The Australia Telescope Compact Array Broadband Backend (CABB): Description & First Results ⋆ (2011, background): “With its expected 30 square degrees field of view at 1.4 GHz, provided by novel phased array feeds, ASKAP will be a fast 21-cm survey machine, designed to carry out large-scale H i spectral line, transients and radio continuum surveys of the sky (Johnston et al. 2007, 2008).”
Doing Science with eLISA: Astrophysics and Cosmology in the Millihertz Regime (2012, methodology): “As a practical example, wide area surveys like LSST (LSST Science Collaborations et al., 2009) in optical or the VAST project using the Australian Square Kilometer Array Pathfinder (Johnston et al., 2007) in radio will have the capability of covering such large area in the sky to high depth several ”
The Murchison Widefield Array: The Square Kilometre Array Precursor at Low Radio Frequencies (2012, methodology): “All three of the MWA, ASKAP and MeerKAT are planning, or have operated, demonstrator instruments.”
EMU: Evolutionary Map of the Universe (2011, unknown): “ASKAP (Johnston et al. 2007, 2008; Deboer et al. 2009) will consist of 36 12-metre antennas spread over a region 6 km in diameter.”
GAMA: towards a physical understanding of galaxy formation (2009, background): “We plan to answer this question directly though deep radio observations with the Australian Square Kilometer Array Pathfinder (ASKAP: Johnston et al. 2007), which will measure the neutral H i and dynamical masses, as well as identifying any strong neutral gas inflows/outflows for most of our sample.”
The H i Distribution of the Milky Way (2009, background): “Current activities at CSIRO and DRAO are summarized by Johnston et al. (2007).”
Galaxy and Mass Assembly (GAMA): survey diagnostics and core data release (2010, methodology): “Within the next 3–5 yr we expect to ingest additional data sets from GALEX, Herschel, WISE, GMRT, VISTA, VST and ASKAP as well as expand our core AAT programme to cover a larger area of ∼400 deg2 to rSersic 19.8 mag.”