Wide Field Astronomy with ASKAP Carole Jackson ASKAP Project Team 5 November 2009

Wide Field Astronomy with ASKAP ASKAP specifications Survey science process & User policy Survey science ASKAP - what next ASKAP - developed & built by CSIRO Simon Johnston & Ilana Feain ASKAP Project Scientists ASKAP - fully funded Many aligned Australian developments

ASKAP & SKA ASKAP = Australia’s Pathfinder contribution to the SKA ASKAP - an SKA Pathfinder to Demonstrate wide FoV, high dynamic-range imaging on a world-class array telescope (PAFs) Demonstrate Australia’s candidate SKA site, the Murchison Radio Observatory (MRO). ASKAP’s role as a radio telescope; World’s fastest survey radio telescope at cm frequencies Science surveys have been set: 10 international teams now working with the project

ASKAP Specifications High-dynamic range, wide field-of-view telescope Number of dishes 36 Dish diameter 12 m Max baseline 6 km Resolution (max) 8 Sensitivity < 50 K Speed 1.5x105 m4/K2.deg2 Observing frequency 700 – 1800 MHz Field of View 30 deg2 Processed Bandwidth 300 MHz Channels 16k Focal Plane Phased Array 188 elements (94x dual pol)

ASKAP - Array of phased arrays Checkerboard: Inexpensive PAF architecture Similar to AA’s but use dish to manage FOV, control sidelobes-> high DR across wide FOV PAF Design for SKA: Suzy Jackson (Thurs)

ASKAP @ Murchison Radio Observatory

ASKAP @ Murchison Radio Observatory gazetted towns: 0 population: “up to 160”

2012 – Australia’s new landmark

ASKAP – User Policy (2008) ASKAP telescope time will be assigned to astronomical research projects subject only to scientific merit, and technical and operational feasibility.   ASKAP data and data products will be released publicly through the ASKAP Science Archive on a timescale designed to maximise scientific utilization and impact. No proprietary period. The ASKAP Science Archive will be available to astronomers from all over the world. There will be 3 classes of observing time allocated on ASKAP; Survey Science Projects, Guest Science Projects and Target of Opportunity over-rides. The following principles define the framework within which ASKAP will operate. 9

ASKAP Survey Science Projects Large (>1500 hrs) science projects with major science outcomes During the first 5 years of ASKAP science operations, up to 75% of observing time for these projects Selected via an EOI/proposal process + competitive peer review Membership and leadership of Survey Teams is open with one CSIRO ATNF affiliated astronomer. Projects will work alongside ASKAP early operations Note that 1500 hours is too small to be an SSP and rather it could probably be more like a year. 10 10

ASKAP Survey Science Projects WALLABY (Koribalski/Staveley-Smith) All sky HI survey to z~0.2 0.5M gals) EMU (Norris) All sky continuum to 10 uJy rms GASKAP (Dickey) Galactic and Magellanic HI and OH VAST (Murphy/Chatterjee) Transients and variables (>5 sec) CRAFT (Dodson/Macquart) Fast transients (<5 sec) FLASH (Sadler) HI absorption to z~1 POSSUM (Gaensler/Landecker/Taylor) Polarization / RM grid DINGO (Meyer) Deep HI emission survey COAST (Stairs) Pulsar timing and searching VLBI (Tingay) ASKAP as part of the LBA 11 11

ASKAP Survey Science Projects Rank type Freq (MHz) Θ (“) δ (deg) range Tpointing (hrs) Ttotal δυ (kHz) nchan Stokes (A) WALLABY EG HI emission 1130-1430 30 -90 to +30 8 9600 18 16384 I EMU Continuum 1100-1400 10 ~12 15000 1000 256 (A-) FLASH EG HI absorption 700 - 1000 -90 to +10 2 1700 VAST Transients/Variables 1150 -1450 various 0.01-1 4290 (50%) 10000 I,Q,U,V GASKAP Gal/MC HI & OH 1393-1693 30,60, 90,180 Low latitude & Magellanic 6000 1.1* 15384 DINGO 990-1290 0 or -33 500-2500 7500 POSSUM EG polarisation 1200-1500 5500 300 CRAFT Fast transients any 18-1000 n/a SP VLBI 1350 - 1700 4 TAB 1500 baseband I, Q, U, V COAST Pulsar Timing & Pulsar Searching 1150 1450 20-30 TAB ~1hr 2250 3000 0.5kHz

ASKAP Next Steps ASKAP Survey Science Projects now in the Design Study phase Top ranked proposals are supported by CSIRO Design Study Nov 2009 – early 2012 Kick-off meeting for SSPs - Oct 2009 Regular ongoing meetings/discussions SSP Design Studies to be reviewed by committee Includes early data from first 6-antenna ASKAP array (“BETA”) Time assignment allocated on successful final Design Review Final Design Study Review - Feb 2012

ASKAP Highlights - November 2009 Full-size ASKAP integration model at Marsfield (Sydney). Complete end-to-end system 2. Phased array feed testing at Parkes testbed (Patriot 12m antenna) - going well 3. Antenna 1 built, factory-accepted in China, En route to MRO (Dec 2009) - build Dec/Jan 4. Digital systems CDR: 20-21 October complete 5. Observatory - on site build late Nov 09 onwards 6. ASKAP survey science projects up-and-running 7. Strategic SKA Collaboration with IBM - SDB

< 0.5 mm rms

CSIRO Jobs

ICRAR Jobs

ASKAP - please keep in touch! Keep up-to-date with project news: ASKAP - www.atnf.csiro.au/projects/askap Aus-NZ SKA www.ska.gov.au Quarterly anzSKA Newsletters (general updates) Bi-yearly Science newsletters (see me for one now!) Keep an eye out for the ‘Super Science Fellowships’ - more jobs!

Thank you CSIRO Australia Telescope National Facility Dr Carole Jackson Phone: +61 2 9372 4407 Email: Carole.Jackson@csiro.au Web: www.atnf.csiro.au/projects/askap Thank you Contact Us Phone: 1300 363 400 or +61 3 9545 2176 Email: Enquiries@csiro.au Web: www.csiro.au