Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 3159-3176 |
| Seitenumfang | 18 |
| Fachzeitschrift | Monthly Notices of the Royal Astronomical Society |
| Jahrgang | 536 |
| Ausgabenummer | 4 |
| Frühes Online-Datum | 16 Dez. 2024 |
| Publikationsstatus | Veröffentlicht - 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.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Astronomie und Astrophysik
- Erdkunde und Planetologie (insg.)
- Astronomie und Planetologie
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in: Monthly Notices of the Royal Astronomical Society, Jahrgang 536, Nr. 4, 02.2025, S. 3159-3176.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
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.
AB - 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.
KW - pulsars: general
KW - stars: neutron
KW - surveys
UR - http://www.scopus.com/inward/record.url?scp=85215693420&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2412.07104
DO - 10.48550/arXiv.2412.07104
M3 - Article
AN - SCOPUS:85215693420
VL - 536
SP - 3159
EP - 3176
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 4
ER -