evlbi and the australian ska pathfinder (askap)
DESCRIPTION
Low luminosity GPS survey. eVLBI and the Australian SKA Pathfinder (ASKAP). SN1987A + ATCA. Circinus X-1. Prof. Steven Tingay Curtin University of Technology Perth, Australia 7th eVLBI workshop SHAO, 2008 June. ASKAP. eVLBI in Australasia. - PowerPoint PPT PresentationTRANSCRIPT
eVLBI and the Australian SKA Pathfinder (ASKAP)
Prof. Steven TingayCurtin University of TechnologyPerth, Australia
7th eVLBI workshop SHAO, 2008 June
Low luminosity GPS survey
SN1987A + ATCA
Circinus X-1
ASKAP
eVLBI in Australasia• Based on ATCA, Parkes, Mopra (1 Gbps network) & Hobart (155
Mbps network), with software correlation;
• Routinely available facility (up to 1 Gbps data rate);
• Collaborative (ATNF, Curtin, Swinburne, UTas, NZ) roadmap for: – better connectivity (10 Gbps);– more distributed correlation (ATCA: software/hardware; Curtin: software);– more antennas (New Zealand, ASKAP);
• Demonstrate real-time connectivity to:– Europe (via EXPReS);– Eastern Asia (this meeting - we hope!);– South Africa, South America, India, USA.
• Full detail of current status in Chris Phillips presentation;
• http://www.atnf.csiro.au/vlbi
Auckland
Murchison
5500 km
Perth
CUPPA
APSR CATEP
CABB
Australian SKA Pathfinder (ASKAP)
• 30 - 45 x 12 m dishes;
• Phased Array Feeds (PAF);
• Maximum baseline of 1 - 10 km;
• Radio quiet location on Western Australia SKA site;
• Maximum instantaneous bandwidth of 300 MHz;
• Frequency coverage of at least 0.7 - 1.7 GHz;
• http://www.auska.gov.au
eVLBI and ASKAP:The high-resolution component of ASKAP
Goal: Align with priorities of Australian SKA project and support the Australian bid to win the SKA.
– Demonstrate connectivity and real-time correlation (in software in Perth) on baseline lengths to meet the SKA specifications i.e. at least 3000 km, at high datarate;
– Do some SKA-related science:• Wide field imaging;• Transient detection and identification experiments;• Weak source surveys;• Pulsar proper motion and parallax, etc……….• Described in ASKAP science case (Johnston et al. 2007,
PASA, 24, 174: VLBI chapter by Tingay et al.)
TRIGGER
30” @ 5 mas
10 Gbps
~ 30 uJy/beam
~ 5 mas FWHM
Spectrum? Compact? Morphology? Evolution?
10 Gbps
Summary
• eVLBI now routine for LBA at datarates up to 1 Gbps:
– Approximately 6 eVLBI proposals currently in ATNF system for ongoing observations.
• Pushing to 10 Gbps as quickly as possible;
• Pushing to new instruments in Western Australia and New Zealand for 5500 km real-time baselines;
• Strongly aligned with Australia’s program of SKA science and technology demonstration. Network providers (academic and private) interested and can see the opportunities.