centre of excellence for all-sky astrophysics mwa project: centre of excellence for all-sky...
TRANSCRIPT
![Page 1: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/1.jpg)
Centre of Excellence for All-sky Astrophysicswww.caastro.orgMWA Project:
Centre of Excellence for All-sky AstrophysicsCentre of Excellence for All-sky Astrophysicswww.caastro.org
MWA Consortium:CurtinU, ANU, UMelbourne, SwinburneU,
USydney, UWestern Australia, UTasmania,
MIT, Harvard-Smithsonian CfA, ASU, UW,
Raman Research Institute, CSIRO
![Page 2: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/2.jpg)
MWA Project:
![Page 3: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/3.jpg)
MWA:
Science Goal: EoR Hydrogen 21cm line @ Z=6-13 80 - 230 MHz … to 320 MHz Statistical Detection throughPower Spectrum: angular scales 4’ to 30’
![Page 4: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/4.jpg)
MWA:
Instrument Strategy:
• Geographic Location
• Large N / Small D
(512/5m)
• Compact Array
• “Real-time System”
Gianni!
Science Goal: EoR Hydrogen 21cm line @ Z=6-13 80 - 230 MHz … to 320 MHz
![Page 5: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/5.jpg)
Location of MWA
Australia’s SKA site
(infrastructure, etc)
![Page 6: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/6.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
The Shire of Murchison is a large agricultural region in the central part of Western Australia, and is the only shire in Australia without a town.
Population: 114 (2009)Area: 41173 km² (15,897.0 sq mi)
~ Netherlands
Strategy:• less RFI• lower power levels• fewer bits• lower bandwidths• less complexity• lower cost
![Page 7: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/7.jpg)
Small D ~ 5m
Chris Williams (for scale)
![Page 8: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/8.jpg)
Hydra A
115 MHz
50 degbetweennulls
HPBW~ 30 deg
Small D => Large Field of ViewField of View
![Page 9: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/9.jpg)
Virgo A 3C273
Jan 2010
Small D => Large Field of ViewField of View
![Page 10: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/10.jpg)
Aerial Photo of “Small N”“Small N” = 32 Tile Prototype Array:
![Page 11: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/11.jpg)
West-East [m]
Locations of Antenna Tiles in
32T Array
![Page 12: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/12.jpg)
Layout of Large N = 512 Tile Array (128 intermediate)
COMPACT* Densely populated core for Surface Brightness sensitivity (!!!!!)* Ionospheric wobble treated as rubber sheet sky
1.5 km
Strategy:• less complexity• lower cost
![Page 13: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/13.jpg)
Correlator:
• FPGA based “hardware correlator” and fine Filter Bank (10KHz channels)
• Correlate all pairs => 130,816 Interferometer Baselines
• (Prototyping & Testing … baseband recorders, software filter banks, correlators, and beamformers, …)
![Page 14: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/14.jpg)
Hydra A115 MhzJan 2010
![Page 15: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/15.jpg)
Hydra A121 MhzChris WilliamsSep 2010
![Page 16: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/16.jpg)
Pictor A
Parkes Catalog
![Page 17: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/17.jpg)
Pictor A
Parkes Catalog
MWA Sources
![Page 18: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/18.jpg)
32T Image114 MHz
21 57 05.8-69 41 22
UV coverage~10 x 2min
over wide HA range
![Page 19: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/19.jpg)
Centaurus A
![Page 20: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/20.jpg)
Centaurus A
![Page 21: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/21.jpg)
CenA
Left: MWA contours on ACTA+PKS image
Right:MWA 115MHz image
![Page 22: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/22.jpg)
The Sun with MWAComparison with X-ray observations
![Page 23: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/23.jpg)
Solar Radio Bursts 170-200 MHz Oberoi, Matthews, et al
![Page 24: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/24.jpg)
Grid of Radio Spectraacross theface of the Sun
Oberoi, Matthews, et al
![Page 25: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/25.jpg)
Oberoi, Matthews, et alInstantaneous 32T uv-coverage
![Page 26: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/26.jpg)
Ord, Mitchell & Greenhill“2PiP”
baseband recording system
Vela Pulsar
![Page 27: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/27.jpg)
Ord, Mitchell & Greenhill“2PiP”
baseband recording system
![Page 28: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/28.jpg)
MWA EoR Target FieldsChris Williams, MIT
![Page 29: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/29.jpg)
MWA FutureAugust 2011 - lay in the infrastructureDecember 2011 - lay tiles - populate CSIRO facility bldg
(with correlator/RTS hardware)
February 2012 - place receiversJune 2012 - 128T hardware installed - commissioning phase
![Page 30: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/30.jpg)
Contrast between Tb(Moon) and Tb(Sky)
Tb(Sky)
Non-thermal + EoR,etc
Tb(Moon)
Thermal ~B.B.
Experiment:
Tb = Tb(moon) - Tb(sky)
TbTb
BB spectrum: smooth &known
NotSmooth
!?
![Page 31: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/31.jpg)
Recent Data Sets…
LOFAR … several long observations at Full Moon Nov, Dec, Jan, …(?)
MWA… few hours near Full Moon, Sept.
![Page 32: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/32.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
BenMcKinley,ANU
Moon Field - 83 MHz
![Page 33: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/33.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Moon Field - 156 MHz
![Page 34: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/34.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Moon Field - 105 MHz Day 1
![Page 35: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/35.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Moon Field - 105 MHz Day 2
![Page 36: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/36.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
80 100 120 140 160 MHz
Tb
= Tb(moon) - Tb(sky)
![Page 37: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/37.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 38: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/38.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 39: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/39.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 40: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/40.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 41: Centre of Excellence for All-sky Astrophysics MWA Project: Centre of Excellence for All-sky Astrophysics Centre of Excellence for All-sky](https://reader035.vdocuments.net/reader035/viewer/2022062315/56649f3d5503460f94c5da40/html5/thumbnails/41.jpg)
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.