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Continuum Projects

This list shows projects associated with continuum, polarisation and space or time resolution.

AS014: Evolutionary Map of the Universe (EMU)

Principal Investigator: Andrew Hopkins (Macquarie)
EMU is a deep (10 μJy/beam rms) radio continuum survey of 75% of the entire sky. EMU will probe typical star forming galaxies to redshift 1, powerful starbursts to even greater redshifts, Active Galactic Nuclei to the edge of the Universe, as well as undoubtedly discovering new classes of rare objects. The key science goals for EMU are to trace the evolution of star forming galaxies and massive black holes throughout the history of the Universe and to explore large-scale structure. EMU will create the most sensitive wide-field atlas yet made, and provide a long-lasting legacy survey. Visit the EMU website.

AS004: An ASKAP Survey for Variables and Slow Transients (VAST)
Principal Investigators: Tara Murphy (University of Sydney) and David Kaplan (University of Wisconsin-Milwaukee)
VAST gives unprecedented opportunities to investigate the sky at radio wavelengths for transients with a timescale as short as 5 seconds. ASKAP’s wide-field survey capabilities will enable the discovery and investigation of variable and transient phenomena from the local to the cosmological including flare stars, intermittent pulsars, X-ray binaries, magnetars, extreme scattering events, intra-day variables, radio supernovae and the orphan afterglows of gamma-ray bursts. VAST will probe unexplored regions of phase space where new classes of transient sources may be detected. Visit the VAST website.

AS007: Polarization Sky Survey of the Universe's Magnetism (POSSUM)
Principal Investigators: Naomi McClure-Griffiths (Australian National University), Bryan Gaensler (Dunlap Institute for Astronomy and Astrophysics) and George Heald (CSIRO)
Understanding the Universe is impossible without understanding magnetic fields. Magnetic fields are key to the non-thermal Universe, yet it is unclear how large-scale magnetic fields are generated and maintained. POSSUM will use radio source polarization, in particular the technique of rotation measure (RM) synthesis, to perform a wide-field survey that will yield a grid of RMs over a substantial fraction of the sky. The science outcomes of POSSUM will revolutionise our understanding of the ordered components of the Milky Way’s magnetic field, test dynamo and other models of magnetic field generation in galaxies and clusters, and carry out a comprehensive census of magnetic fields as a function of redshift in galaxies, active galactic nuclei, galaxy clusters and the intergalactic medium. Visit the POSSUM website.

AS008: The Commensal Real-time ASKAP Fast Transients survey (CRAFT)
Principal Investigators: Keith Bannister (CSIRO), Ryan Shannon (Swinburne)
CRAFT is a purely commensal survey for transient sources with timescales shorter than 5 seconds. Short-timescale transients are associated with the most energetic and brightest single events in the Universe. They provide Nature’s ultimate laboratory; their emission is generated by matter under extreme conditions whose properties probe physical regimes far transcending the range achievable in terrestrial experiments. Fast timescale transients open new vistas on the physics of high brightness temperature objects, extreme states of matter and the physics of strong gravitational fields. In addition, the detection of extragalactic transients affords us an entirely new and sensitive probe on the huge reservoir of baryons in the intergalactic medium. Visit the CRAFT website.

AS003: The High Resolution Components of ASKAP: Meeting the Long Baseline Specifications for the SKA (VLBI)
Principal Investigator: Steven Tingay (ICRAR/Curtin University of Technology)
ASKAP, in combination with the existing Australian Long Baseline Array, high speed data recording equipment, innovative software correlation facilities and high speed data transport networks, provides a high resolution capability that is unmatched in terms of SKA demonstrators around the world. Science outcomes include proper motion and parallax of pulsars, high resolution imaging of Active Galactic Nuclei, follow-up of transient radio sources and distances and proper motions of OH masers.

AS015: Compact Objects with ASKAP: Surveys and Timing (COAST)
Principal Investigator: Ingrid Stairs (University of British Columbia)
COAST will undertake an observational program of pulsar timing aimed at high profile issues in astrophysics. This includes limits on, or the detection of, a background of gravitational waves, stringent tests of the predictions of General Relativity and other theories of strong gravity and the studies of binary stellar evolution. In addition to pulsar timing, blind searches for pulsars will also be carried out which will lead to a better understanding of the Galactic neutron star population, the pulsar emission mechanism and the structure and magnetic field of the Galaxy.

Spectral Line Projects

This list shows projects associated with frequency resolution.

AS016: Widefield ASKAP L-Band Legacy All-Sky Blind Survey (WALLABY)
Principal Investigator: Lister Staveley-Smith (ICRAR/University of Western Australia)
WALLABY is an extragalactic neutral hydrogen survey over 75% of the entire sky and will detect up to 500,000 galaxies to a redshift of 0.26. The fundamental aims of WALLABY are to examine the HI properties and large-scale distribution of these galaxies in order to study galaxy formation and the missing satellite problem in the Local Group, evolution and star formation of galaxies, the role of mergers and galaxy interactions, the HI mass function and its variation with galaxy density, the physical processes governing the distribution and evolution of cool gas at low redshift, cosmological parameters relating to gas-rich galaxies and the nature of the cosmic web. WALLABY will provide the largest, most homogeneous HI sample of galaxies yet made, and will be an important pathfinder for key SKA science. Visit the WALLABY website.

AS002: The First Large Absorption Survey in HI (FLASH)
Principal Investigators: James Allison (Oxford) and Elaine Sadler (University of Sydney)
FLASH is a blind HI absorption-line survey that uses background radio continuum sources to identify and characterise foreground neutral hydrogen. FLASH science outcomes are focused on both the neutral gas content of galaxies and the cosmic HI mass density in the redshift range 0.5 FLASH website. Visit the FLASH website

AS105: The Galactic ASKAP Spectral Line Survey: OH (GASKAP-OH)
Principal Investigators: Shari Breen (SKAO) and Joanne Dawson (University of Macquarie/CSIRO)
The flow of matter and energy between stars and the interstellar medium is at the heart of galaxy evolution. GASKAP-OH will help us learn how galaxies process gas into stars and back again, by observing maser and quasi-thermal emission from the four 18-cm transitions of ground-state hydroxyl (OH) in the Milky Way and Large Magellanic Cloud at unprecedented sensitivity and resolution. The survey will reveal the formation and early evolution of molecular clouds and young stars, and the end-of-life activities of old massive stars, and will refine our understanding of the structure of the Milky Way Galaxy, which has long been better determined in the Northern than the Southern sky. Visit the GASKAP website.

AS108: The Galactic ASKAP Spectral Line Survey: Neutral Hydrogen (GASKAP-HI)
Principal Investigators: John Dickey (University of Tasmania), Naomi McClure-Griffiths (Australian National University) and Nickolas Pingel (Australian National University)
GASKAP-HI is a high spectral resolution survey of the neutral hydrogen (HI) line in the Milky Way and Magellanic Systems. Compared with existing data, GASKAP-HI will achieve about an order of magnitude improvement in both brightness sensitivity and in angular resolution. GASKAP-HI will detect and map diffuse emission from atomic clouds, HI absorption toward background continuum sources from the cold neutral atomic gas, and the structures in the gas that trace the effects of stellar winds and supernova explosions. The Magellanic Clouds will show all these processes as they appear in two other, very different environments. GASKAP-HI will provide stunning images of the interstellar medium that will be indispensable for astronomers working at other wavelengths. Visit the GASKAP website.

AS012: Deep Investigations of Neutral Gas Origins (DINGO)
Principal Investigator: Martin Meyer (ICRAR/University of Western Australia)
DINGO will study the evolution of neutral hydrogen (HI) from the current epoch to redshift about 0.5, providing a legacy dataset spanning cosmologically representative volumes. Measurements will be made of key cosmological distributions, including ?HI, the HI mass function and the halo occupation distribution function. ASKAP data will be combined with optical data to enable a thorough study of the co-evolution of the stellar, baryonic and dark matter content of galaxies. Visit the DINGO website.

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