The High Time Resolution Universe Pulsar Survey - XIX: A coherent GPU-accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane

Research output: Contribution to journal › Article › Research › peer review

Authors

  • R. Sengar
  • M. Bailes
  • V. Balakrishnan
  • E. D. Barr
  • N. D.R. Bhat
  • M. Burgay
  • M. C.I. Bernadich
  • A. D. Cameron
  • D. J. Champion
  • W. Chen
  • C. M.L. Flynn
  • A. Jameson
  • S. Johnston
  • M. J. Keith
  • M. Kramer
  • V. Morello
  • C. Ng
  • A. Possenti
  • S. Stevenson
  • R. M. Shannon
  • W. Van Straten
  • J. Wongphechauxsorn

Research Organisations

External Research Organisations

  • Swinburne University of Technology
  • University of Wisconsin Milwaukee
  • Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
  • Max Planck Institute for Radio Astronomy (MPIfR)
  • International Centre for Radio Astronomy Research (ICRAR)
  • Istituto Nazionale di Astrofisica (INAF)
  • Commonwealth Scientific and Industrial Research Organisation (CSIRO)
  • University of Manchester
  • University of Toronto
  • University of Cagliari
  • Auckland University of Technology
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Details

Original languageEnglish
Pages (from-to)3159-3176
Number of pages18
JournalMonthly Notices of the Royal Astronomical Society
Volume536
Issue number4
Early online date16 Dec 2024
Publication statusPublished - Feb 2025

Abstract

We conducted a GPU-accelerated reprocessing of of the archival data from the High Time Resolution Universe South Low Latitude (HTRU-S LowLat) pulsar survey by implementing a pulsar search pipeline that was previously used to reprocess the Parkes Multibeam Pulsar Survey (PMPS). We coherently searched the full 72-min observations of the survey with an acceleration search range up to, which is most sensitive to binary pulsars experiencing nearly constant acceleration during 72 min of their orbital period. Here we report the discovery of 71 pulsars, including six millisecond pulsars, of which five are in binary systems, and seven pulsars with very high dispersion measures (DM). These pulsar discoveries largely arose by folding candidates to a much lower spectral signal-to-noise ratio than in previous surveys and by exploiting the coherence of folding over the incoherent summing of the Fourier components to discover new pulsars as well as candidate classification techniques. We show that these pulsars could be fainter and on average more distant as compared with both the previously reported 100 HTRU-S LowLat pulsars and the background pulsar population in the survey region. We have assessed the effectiveness of our search method and the overall pulsar yield of the survey. We show that through this reprocessing we have achieved the expected survey goals, including the predicted number of pulsars in the survey region, and discuss the major causes why these pulsars were missed in previous processing of the survey.

Keywords

    pulsars: general, stars: neutron, surveys

ASJC Scopus subject areas

Cite this

The High Time Resolution Universe Pulsar Survey - XIX: A coherent GPU-accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane. / Sengar, R.; Bailes, M.; Balakrishnan, V. et al.
In: Monthly Notices of the Royal Astronomical Society, Vol. 536, No. 4, 02.2025, p. 3159-3176.

Research output: Contribution to journal › Article › Research › peer review

Sengar, R, Bailes, M, Balakrishnan, V, Barr, ED, Bhat, NDR, Burgay, M, Bernadich, MCI, Cameron, AD, Champion, DJ, Chen, W, Flynn, CML, Jameson, A, Johnston, S, Keith, MJ, Kramer, M, Morello, V, Ng, C, Possenti, A, Stevenson, S, Shannon, RM, Van Straten, W & Wongphechauxsorn, J 2025, 'The High Time Resolution Universe Pulsar Survey - XIX: A coherent GPU-accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane', Monthly Notices of the Royal Astronomical Society, vol. 536, no. 4, pp. 3159-3176. https://doi.org/10.48550/arXiv.2412.07104, https://doi.org/10.1093/mnras/stae2716
Sengar, R., Bailes, M., Balakrishnan, V., Barr, E. D., Bhat, N. D. R., Burgay, M., Bernadich, M. C. I., Cameron, A. D., Champion, D. J., Chen, W., Flynn, C. M. L., Jameson, A., Johnston, S., Keith, M. J., Kramer, M., Morello, V., Ng, C., Possenti, A., Stevenson, S., ... Wongphechauxsorn, J. (2025). The High Time Resolution Universe Pulsar Survey - XIX: A coherent GPU-accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane. Monthly Notices of the Royal Astronomical Society, 536(4), 3159-3176. https://doi.org/10.48550/arXiv.2412.07104, https://doi.org/10.1093/mnras/stae2716
Sengar R, Bailes M, Balakrishnan V, Barr ED, Bhat NDR, Burgay M et al. The High Time Resolution Universe Pulsar Survey - XIX: A coherent GPU-accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane. Monthly Notices of the Royal Astronomical Society. 2025 Feb;536(4):3159-3176. Epub 2024 Dec 16. doi: 10.48550/arXiv.2412.07104, 10.1093/mnras/stae2716
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title = "The High Time Resolution Universe Pulsar Survey - XIX: A coherent GPU-accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane",
abstract = "We conducted a GPU-accelerated reprocessing of of the archival data from the High Time Resolution Universe South Low Latitude (HTRU-S LowLat) pulsar survey by implementing a pulsar search pipeline that was previously used to reprocess the Parkes Multibeam Pulsar Survey (PMPS). We coherently searched the full 72-min observations of the survey with an acceleration search range up to, which is most sensitive to binary pulsars experiencing nearly constant acceleration during 72 min of their orbital period. Here we report the discovery of 71 pulsars, including six millisecond pulsars, of which five are in binary systems, and seven pulsars with very high dispersion measures (DM). These pulsar discoveries largely arose by folding candidates to a much lower spectral signal-to-noise ratio than in previous surveys and by exploiting the coherence of folding over the incoherent summing of the Fourier components to discover new pulsars as well as candidate classification techniques. We show that these pulsars could be fainter and on average more distant as compared with both the previously reported 100 HTRU-S LowLat pulsars and the background pulsar population in the survey region. We have assessed the effectiveness of our search method and the overall pulsar yield of the survey. We show that through this reprocessing we have achieved the expected survey goals, including the predicted number of pulsars in the survey region, and discuss the major causes why these pulsars were missed in previous processing of the survey.",
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T1 - The High Time Resolution Universe Pulsar Survey - XIX

T2 - A coherent GPU-accelerated reprocessing and the discovery of 71 pulsars in the Southern Galactic plane

AU - Sengar, R.

AU - Bailes, M.

AU - Balakrishnan, V.

AU - Barr, E. D.

AU - Bhat, N. D.R.

AU - Burgay, M.

AU - Bernadich, M. C.I.

AU - Cameron, A. D.

AU - Champion, D. J.

AU - Chen, W.

AU - Flynn, C. M.L.

AU - Jameson, A.

AU - Johnston, S.

AU - Keith, M. J.

AU - Kramer, M.

AU - Morello, V.

AU - Ng, C.

AU - Possenti, A.

AU - Stevenson, S.

AU - Shannon, R. M.

AU - Van Straten, W.

AU - Wongphechauxsorn, J.

N1 - Publisher Copyright: © 2024 The Author(s).

PY - 2025/2

Y1 - 2025/2

N2 - We conducted a GPU-accelerated reprocessing of of the archival data from the High Time Resolution Universe South Low Latitude (HTRU-S LowLat) pulsar survey by implementing a pulsar search pipeline that was previously used to reprocess the Parkes Multibeam Pulsar Survey (PMPS). We coherently searched the full 72-min observations of the survey with an acceleration search range up to, which is most sensitive to binary pulsars experiencing nearly constant acceleration during 72 min of their orbital period. Here we report the discovery of 71 pulsars, including six millisecond pulsars, of which five are in binary systems, and seven pulsars with very high dispersion measures (DM). These pulsar discoveries largely arose by folding candidates to a much lower spectral signal-to-noise ratio than in previous surveys and by exploiting the coherence of folding over the incoherent summing of the Fourier components to discover new pulsars as well as candidate classification techniques. We show that these pulsars could be fainter and on average more distant as compared with both the previously reported 100 HTRU-S LowLat pulsars and the background pulsar population in the survey region. We have assessed the effectiveness of our search method and the overall pulsar yield of the survey. We show that through this reprocessing we have achieved the expected survey goals, including the predicted number of pulsars in the survey region, and discuss the major causes why these pulsars were missed in previous processing of the survey.

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