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Advancements in Pulsar Search Techniques: Utilizing FPGAs, CPUs, and GPUs

This report examines innovative techniques for pulsar searching, featuring contributions from leading researchers including Matthew Bailes, Peter McMahon, and Willem van Straten. It highlights the implementation of various computational platforms such as FPGAs, CPUs, and GPUs, assessing their effectiveness in performing pulsar surveys. Detailed analysis includes the Magnetic Field-Period Diagram, real-time RRAT detection, and results from the HITRUN and P-ALFA projects. Emphasis is placed on improving survey depth for high-DM millisecond pulsars (MSPs) and the future capabilities of the instrumentation used.

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Advancements in Pulsar Search Techniques: Utilizing FPGAs, CPUs, and GPUs

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  1. Pulsar Searching+ Receivers Matthew Bailes (CAASTRO), FPGAs: Peter Mc Mahon, Terry Fibila, Jonathon Kocz. CPUs: Willem van Straten, Andrew Jameson, Mike Keith GPUs: Ben Barsdell + HITRUN team (Science! & Search coding)

  2. Crab pulsar Pulsars go this way Magnetic Field - Period Diagram “Noisy” “Smooth”

  3. Vela Pulsar

  4. Competition

  5. HITRUN Pulsar Surveys (Keith et al. 2010) • Digital Versions of the Parkes MB Surveys • 13 x 1024 x 64 us • Medium-Latitude Survey (540s) • Ultra-deep Survey (4000s) • All-sky Survey (260s) • Better for high-DM MSPs • Better for Lorimer bursts • Better for RRATs • Deeper than old surveys

  6. Berkeley-Parkes-Swinburne-Recorder“BPSR” Dedicated fibre 5 TB/day

  7. Bandpasses

  8. MSPs • HITRUN: 27 MSPs • P-ALFA: 15 MSPs? • MSP with a main sequence companion • (PSR J1903+0327)? • FERMI-Related: ~50MSPs • Mostly short-period and many close • GBT Drift 350 MHz: >6 MSPs?? • MSP occasionally super-bright

  9. Precision Timing:PSR J1017-7156

  10. A Jupiter-mass “Planet” Pulsar Mc~ 0.001 Mo Porb~ 0.0907d D ~ 1.2 kpc?

  11. MSP Luminosity Function (Levin et al.)

  12. RAW Cleaned

  13. Barsdell’s Heimdall Real-time RRAT Detector

  14. Barsdell’s Heimdall Real-time RRAT Detector

  15. BAD RFI EXAMPLE

  16. Dan Thornton (U Manchester)DM >> Lorimer Burst ! Well off galactic plane. One beam Only Instrumentation Perfect Allows detailed studies

  17. In future capable of finding in real time Heimdall plot of Thornton’s burst.

  18. Burst Profile ~50 sigma Scatter Tail (nu^-4.0(4) Freq index -2.000(6)

  19. Search SNR PSR flux

  20. Computational complexity PSR flux

  21. Competition

  22. Conclusions • Wideband feed complements the MB: • Good for point sources • Good for follow-ups • Limited RFI excision? Parallel system? • PAF: • Tsys/Aeff critical: 2x MB (marginal) 1x MB (excellent) • MultiBeam: • Currently #1 instrument for PSR and Burst surveys • RFI excision should be mirrored on PAFs?

  23. 1909-3744 8s dumps!

  24. Peryton Examples (Burke-Spolaor et al) Ugly, Fat.

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