Fast Radio Bursts with HIRAX Jeff Peterson FRB 110523 McWilliams - - PowerPoint PPT Presentation

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Fast Radio Bursts with HIRAX Jeff Peterson FRB 110523 McWilliams - - PowerPoint PPT Presentation

Jul 04, 2023 592 likes •796 views

Fast Radio Bursts with HIRAX Jeff Peterson FRB 110523 McWilliams Center for Cosmology Carnegie Mellon University, PiDsburgh PA USA First HIRAX The Lorimer Burst, 2007 Six-Meter Dish Built at CMU, tested at Durban SA The Lorimer Burst

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Fast Radio Bursts with HIRAX

Jeff Peterson McWilliams Center for Cosmology Carnegie Mellon University, PiDsburgh PA USA The Lorimer Burst, 2007 First HIRAX Six-Meter Dish Built at CMU, tested at Durban SA FRB 110523

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The Lorimer Burst (2006)

  • Found in a

pulsar search of archived data from Parkes

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CharacterisWcs of Previous Bursts (11)

Thornton etal 2013

  • Peak Flux ~ 1 Jansky
  • Highly dispersed
  • Pulse width few ms
  • Three FRB have scaDering tail
  • LocaWon precision: 15 arcmin.
  • Not concentrated in GalacWc plane
  • Rate ~ 2500 sky^-1 day^-1
  • All but one detected with Parkes
  • Two events found at same poinWng
  • These events have different dispersion
  • No counterparts idenWfied at other

wavelengths

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Recent news: Five new bursts at Parkes, Arecibo burst repeats

Double peak Champion etal

Coming soon: several Bursts found with MOST

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FRB sources are very likely outside of the Milky Way

Blue: pulsar Green: FRB Red: FRB110523

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If FRB are at z~1 they have excepWonal brightness temperature

Credit: J-P Macquart Black: Parkes; Pink: SKA1-lo; Grey: SKA1-mid

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FRB proposed models

Gamma-ray Bursts Flare stars Pulsars

We are here

Merging Black Holes Magnetars Supernovae Evaporating Black Holes “Blitzars” SETI Super-giant Pulses Pernicious RFI Atmospheric effects A well-coordinated hoax

Galactic extra-Galactic

Slide by J Hessels

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HIRAX: The Hydrogen Intensity and Real-Wme Analysis eXperiment

  • Primary Science Goal: Probe Dark Energy

models using a 21-cm Intensity Mapping BAO test

  • Sec Goal:

– Find and sharply localize – Hundreds of FRBs

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Also a Thrash Metal Band

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Collaborators

  • UKZN: Sievers, Moodley, Chiang, Hilton, Poole
  • Stellenbosch: Brink
  • UCT: Woudt, Taylor
  • Rhodes: Smirnov
  • UWC: Santos, Maartens, Dave
  • AIMS: Basset
  • DUT: Van Vuuran, Macpherson
  • Carnegie-Mellon: Peterson, Lin, Kung
  • U Wisconsin: Timbie Gayley
  • ASIAA: Chang
  • IUCAA: Gupta, Srianand
  • APC Paris: Ganga, Bucher
  • NRAO: Ransom
  • Oxford: Karastergiou
  • HDU (China): Zhi-Ping Chen
  • Yale: Newburgh
  • Toronto: Lokhorst
  • Various CHIME Canadians
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Current HIRAX Plan

  • 1024 close-packed 6m dishes at Karoo site.
  • KIS--No tracking, no cryogenics, commodity dishes.
  • Dishes Wlt N/S by hand: when “deep enough” on a

strip, Wlt over to increase fsky.

  • Operate between 400-800 MHz
  • Channelizing on FPGA ICE boards (MaD Dobbs)
  • CorrelaWon on GPUs.
  • Plan to do beamforming in correlator, distribute beams

for FRB processing.

  • Outrigger arrays in Botswana and Namibia to localize

FRBs

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Status

  • Funded to build 128 element at Klerefontein
  • Proposal in SA under review to expand to 512
  • Plan to submit NSF MRI proposal for the final 512

elements

  • 4 Element pathfinder in place at HartRAO
  • Ten dishes in transit
  • Use to verify performance of RF system, RFOF,

Channelizer, beamformer, correlator, RealWme FRB search.

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Tests at HartRAO

PA102 PA100 PA101 CO1 PAC101 PAC102 COC1 PAC201 PAC202 COC2 PAC301 PAC302 COC3 PAC402 PAC401 COC4 PAC502 PAC501 COC5 PAC601 PAC602 COC6 PAC702 PAC701 COC7 PAC802 PAC801 COC8 PAC902 PAC901 COC9 PAC1002 PAC1001 COC10 PAC1102 PAC1101 COC11 PAC1202 PAC1201 COC12 PAC1302 PAC1301 COC13 PAC1402 PAC1401 COC14 PAC1501 PAC1502 COC15 PAC1601 PAC1602 COC16 PAC1701 PAC1702 COC17 PAC1801 PAC1802 COC18 PAC1901 PAC1902 COC19 PAC2002 PAC2001 COC20 PAC2101 PAC2102 COC21 PAC2202 PAC2201 COC22 PAC2302 PAC2301 COC23 PAI102 PAI101 COI1 PAI202 PAI201 COI2 PAI301 PAI302 COI3 PAI401 PAI402 COI4 PAI501 PAI502 COI5 PAI601 PAI602 COI6 PAR101 PAR102 COR1 PAR201 PAR202 COR2 PAR301 PAR302 COR3 PAR401 PAR402 COR4 PAR502 PAR501 COR5 PAR602 PAR601 COR6 PAR701 PAR702 COR7 PAR801 PAR802 COR8 PAR901 PAR902 COR9 PAR1001 PAR1002 COR10 PAR1101 PAR1102 COR11 PAR1201 PAR1202 COR12 PARF0input101 CORF0input1 PARF0input201 CORF0input2 PATR104 PATR106 PATR105 PATR103 PATR101 PATR102 COTR1 PAU104 PAU105 PAU1017 PAU101 PAU103 PAU102 PAU1016 PAU106 PAU107PAU108 PAU109 PAU1010 PAU1015 PAU1014 PAU1011 PAU1012 PAU1013 COU1 PA102 PAC901 PAC1001 PAC1101 PAC1201 PAC1301 PAC1401 PAC2001 PAC2101 PAC2201 PAC2301 PAR302 PAR402 PAR502 PAR602 PAC302 PAC402 PAC502 PAC602 PAC702 PAC802 PAC902 PAC1002 PAC1102 PAC1202 PAC1302 PAC1402 PAC1502 PAC1602 PAC2002 PAC2102 PAC2202 PAC2302 PAI102 PAI202 PAR702 PAR902 PAR1102 PAR1202 PATR103 PAU102 PAU103 PAU106 PAU108 PAU1010 PAU1011 PAU1013 PAU1015 PAU1017 PA101 PAC1902 PAC101 PAI101 PARF0input101 PAC102 PAI301 PAU101 PAC201 PAI201 PARF0input201 PAC202 PAI401 PAU104 PAC301 PAC701 PAR102 PAU1016 PAC401 PAI302 PAR101 PAC501 PAI402 PAR201 PAC601 PAC801 PAR202 PAU105 PAC1501 PAI502 PAR501 PAC1601 PAI602 PAR601 PAC1701 PAI501 PAU1012 PAC1702 PAR801 PAR1201 PAC1801 PAI601 PAU109 PAC1802 PAR901 PAR1001 PAC1901 PATR101 PAR301 PAU107 PAR401 PAU1014 PATR102 PATR105 PAR701 PAR802 PATR106 PAR1002 PAR1101 PATR104

Newer design: LNA at feed antenna terminals à

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10 six-meter dishes on the boat to Durban

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Laser-cut dish ribs at Durban

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Outriggers

  • Central array makes iniWal FRB

detecWon

  • Central array and outriggers

streaming amplitudes to disk… but deleWng aler few hours

  • On candidate alert: amplitudes

files are saved for all arrays

  • Carry out aperture synthesis

imaging using know DM, Wme and formed-beam

  • Provides a sub arc second error

ellipse for most FRBs

HIRAX

Outrigger 25 dishes 100 km Outrigger 25 dishes

Small Outriggers allow arcsecond localizaWon

  • f each FRB
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Science Possible with HIRAX-FRB

  • Fast Radio Bursts: 30,000 m^2 collecWng area w/

1000 beams allows detecWon of >10 FRB/day.

  • Pulsar search: Pulsars spend 20 min in beam

each day--12 µJy/scan

  • Site allows pulsar search in GalacWc Center.
  • Neutral hydrogen and OH absorbers: Req’s

Higher frequency resoluWon in beam-formed data (with a few FFTs on GPUs).

  • Diffuse polarizaWon of galaxy.
  • Other ideas?
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Thinking BIG: Specs and FRB event rate for a future array

  • 4028 elements, 10 m aperture on-axis close
  • packed. Plus two outrigger arrays…$30M
  • 4028 instantaneous dual-pol beams
  • EffecWve area 150,000 m^2…40 x GBT, 62 x
  • CHIME. 4 x FAST (but twice Tsys of GBT or FAST)
  • Gain 80 K/Jy
  • FRB rate: 19,000 /day -> one every 5 sec
  • MulW-octave feed? Wider correlator bandwidth?
  • What other science does this enable?