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Timing observations of three Galactic millisecond pulsars

dc.contributor.authorLORIMER, D.R.
dc.contributor.authorKAWASH, A.M.
dc.contributor.authorFREIRE, P.C.C.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorSMITH, D.A.
dc.contributor.authorKERR, M.
dc.contributor.authorMCLAUGHLIN, M.A.
dc.contributor.authorMICKALIGER, M.B.
dc.contributor.authorSPIEWAK, R.
dc.contributor.authorBAILES, M.
dc.contributor.authorBARR, E.
dc.contributor.authorBURGAY, M.
dc.contributor.authorCAMERON, A.D.
dc.contributor.authorCAMILO, F.
dc.contributor.authorJOHNSTON, S.
dc.contributor.authorJANKOWSKI, F.
dc.contributor.authorKEANE, E.F.
dc.contributor.authorKEITH, M.
dc.contributor.authorKRAMER, M.
dc.contributor.authorPOSSENTI, A.
dc.date.issued2021
dc.identifier.issn0035-8711
dc.description.abstractEnWe report observed and derived timing parameters for three millisecond pulsars (MSPs) from observations collected with the Parkes 64-m telescope, Murriyang. The pulsars were found during reprocessing of archival survey data by Mickaliger et al. One of the new pulsars (PSR J1546–5925) has a spin period P = 7.8 ms and is isolated. The other two (PSR J0921–5202 with P = 9.7 ms and PSR J1146–6610 with P = 3.7 ms) are in binary systems around low-mass (⁠>0.2M⊙⁠) companions. Their respective orbital periods are 38.2 and 62.8 d. While PSR J0921–5202 has a low orbital eccentricity e = 1.3 × 10^−5, in keeping with many other Galactic MSPs, PSR J1146–6610 has a significantly larger eccentricity, e = 7.4 × 10^−3. This makes it a likely member of a group of eccentric MSP–helium white dwarf binary systems in the Galactic disc whose formation is poorly understood. Two of the pulsars are co-located with previously unidentified point sources discovered with the Fermi satellite’s Large Area Telescope, but no γ-ray pulsations have been detected, likely due to their low spin-down powers. We also show that, particularly in terms of orbital diversity, the current sample of MSPs is far from complete and is subject to a number of selection biases.
dc.language.isoen
dc.publisherOxford University Press (OUP): Policy P - Oxford Open Option A
dc.subject.enpulsars: individual (PSR J0921–5202
dc.subject.enPSR J1146–6610
dc.subject.enPSR J1546–5925)
dc.subject.enstars: neutron
dc.title.enTiming observations of three Galactic millisecond pulsars
dc.typeArticle de revue
dc.identifier.doi10.1093/mnras/stab2474
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv2108.03946
bordeaux.journalMonthly Notices of the Royal Astronomical Society
bordeaux.page5303-5309
bordeaux.volume507
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-03327409
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03327409v1
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