Pulsar discoveries from the TRAPUM UHF survey of Fermi-LAT sources

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dc.contributor.authorThongmeearkom, T.
dc.contributor.authorClark, C.J.
dc.contributor.authorBreton, R.P.
dc.contributor.authorBurgay, M.
dc.contributor.authorNieder, L.
dc.contributor.authorDodge, O.G.
dc.contributor.authorMcGloughlin, B.
dc.contributor.authorBarr, E.D.
dc.contributor.authorBuchner, S.
dc.contributor.authorStappers, B.W.
dc.contributor.authorBerteaud, J.
dc.contributor.authorFerrara, E.C.
dc.contributor.authorFreire, P.C.C.
dc.contributor.authorLevin, L.
dc.contributor.authorRansom, S.M.
dc.contributor.authorVleeschower, L.
dc.contributor.authorBelmonte Díaz, S.
dc.contributor.authorCalore, F.
dc.contributor.authorCognard, I.
dc.contributor.authorDhillon, V.S.
dc.contributor.authorGrießmeier, J.
dc.contributor.authorKaruppusamy, R.
dc.contributor.authorKennedy, Mark
dc.contributor.authorKramer, M.
dc.contributor.authorPadmanabh, P.V.
dc.contributor.authorPapa, M.A.
dc.contributor.authorPhosrisom, A.
dc.contributor.authorSteltner, B.
dc.date.accessioned2026-05-25T15:50:04Z
dc.date.available2026-05-25T15:50:04Z
dc.date.issued2026-02-27
dc.description©The Author(s) 2026. Published by Oxford University Press on behalf of R oy al Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons A t tribution License (https://creativecommons.org/licenses/by/4.0/ ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.description.abstractThe Fermi Large Area Telescope (LAT) provides advantages for radio pulsar searches by enabling efficient target selection. We can confidently point radio telescopes to the positions of Fermi unidentified gamma-ray sources that have a high probability of hosting a pulsar. As part of Transients and Pulsars with MeerKAT (TRAPUM), we conducted a survey of Fermi-LAT sources using the Ultra High Frequency (UHF; 544–1088 MHz) receiver of the MeerKAT radio telescope. We observed 79 sources that were identified as pulsar-like candidates using a random forest technique from the Fermi-LAT Fourth Source Catalogue. We observed each target for 10 min at two separate epochs. As a result, we discovered nine new millisecond pulsars (MSPs) and six slow pulsars. Based on the radio discoveries, we also searched for gamma-ray pulsations, confirming that seven of the newly discovered MSPs are associated with Fermi-LAT sources, and performed joint radio and gamma-ray pulsar timing. Companion mass estimates and evidence of radio eclipses indicate that among the nine MSPs there are three black widows and three redbacks. Lastly, we compared the discovered pulsars in the MeerKAT UHF survey against the previous Fermi sources TRAPUM survey at L band, concluding the superiority of UHF observations in sensitivity to fainter pulsars and in detection rate than L band for finding new gamma-ray MSPs. © The Author(s) 2026. Published by Oxford University Press on behalf of Royal Astronomical Society.en
dc.format.extent19
dc.format.extent3562144
dc.identifier.articleidstag406
dc.identifier.authororcidThongmeearkom, T.
dc.identifier.authororcidClark, C.J.
dc.identifier.authororcidBreton, R.P.
dc.identifier.authororcidBurgay, M.
dc.identifier.authororcidNieder, L.
dc.identifier.authororcidDodge, O.G.
dc.identifier.authororcidMcGloughlin, B.
dc.identifier.authororcidBarr, E.D.
dc.identifier.authororcidBuchner, S.
dc.identifier.authororcidStappers, B.W.
dc.identifier.authororcidBerteaud, J.
dc.identifier.authororcidFerrara, E.C.
dc.identifier.authororcidFreire, P.C.C.
dc.identifier.authororcidLevin, L.
dc.identifier.authororcidRansom, S.M.
dc.identifier.authororcidVleeschower, L.
dc.identifier.authororcidBelmonte Díaz, S.
dc.identifier.authororcidCalore, F.
dc.identifier.authororcidCognard, I.
dc.identifier.authororcidDhillon, V.S.
dc.identifier.authororcidGrießmeier, J.
dc.identifier.authororcidKaruppusamy, R.
dc.identifier.authororcidKennedy, Mark§0000-0001-6894-6044
dc.identifier.authororcidKramer, M.
dc.identifier.authororcidPadmanabh, P.V.
dc.identifier.authororcidPapa, M.A.
dc.identifier.authororcidPhosrisom, A.
dc.identifier.authororcidSteltner, B.
dc.identifier.citationThongmeearkom, T, Clark, C J, Breton, R P, Burgay, M, Nieder, L, Dodge, O G, McGloughlin, B, Barr, E D, Buchner, S, Stappers, B W, Berteaud, J, Ferrara, E C, Freire, P C C, Levin, L, Ransom, S M, Vleeschower, L, Belmonte Díaz, S, Calore, F, Cognard, I, Dhillon, V S, Grießmeier, J, Karuppusamy, R, Kennedy, M, Kramer, M, Padmanabh, P V, Papa, M A, Phosrisom, A & Steltner, B 2026, 'Pulsar discoveries from the TRAPUM UHF survey of Fermi-LAT sources', Monthly Notices of the Royal Astronomical Society, vol. 547, no. 4, stag406, pp. 1-19. https://doi.org/10.1093/mnras/stag406
dc.identifier.doi10.1093/mnras/stag406
dc.identifier.endpage19
dc.identifier.issn0035-8711
dc.identifier.issued4
dc.identifier.journaltitleMonthly Notices of the Royal Astronomical Society
dc.identifier.otherRIS: urn:B51F010CE89EAA7F9421DE8CF9A63965
dc.identifier.otherORCID: /0000-0001-6894-6044/work/215731714
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/18871
dc.identifier.urlhttps://www.scopus.com/pages/publications/105036659853
dc.identifier.urlhttps://www.scopus.com/pages/publications/105036659853?origin=resultslist
dc.identifier.volume547
dc.language.isoeng
dc.rightscc_by
dc.subjectBinaries:general
dc.subjectGamma ray production
dc.subjectGamma rays: stars
dc.subjectGamma-rays
dc.subjectLarge area telescopes
dc.subjectMillisecond pulsars
dc.subjectPulsars
dc.subjectPulsars: general
dc.subjectPulsars:individual
dc.subjectRadio astronomy
dc.subjectRadio pulsars
dc.subjectRadio telescopes
dc.subjectUHF devices
dc.subjectUltra-high-frequency
dc.subject[Physics]
dc.titlePulsar discoveries from the TRAPUM UHF survey of Fermi-LAT sourcesen
dc.typeArticle (Peer reviewed)
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