Timing observations of three Galactic millisecond pulsars
| dc.contributor.author | LORIMER, D.R. | |
| dc.contributor.author | KAWASH, A.M. | |
| dc.contributor.author | FREIRE, P.C.C. | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| dc.contributor.author | SMITH, D.A. | |
| dc.contributor.author | KERR, M. | |
| dc.contributor.author | MCLAUGHLIN, M.A. | |
| dc.contributor.author | MICKALIGER, M.B. | |
| dc.contributor.author | SPIEWAK, R. | |
| dc.contributor.author | BAILES, M. | |
| dc.contributor.author | BARR, E. | |
| dc.contributor.author | BURGAY, M. | |
| dc.contributor.author | CAMERON, A.D. | |
| dc.contributor.author | CAMILO, F. | |
| dc.contributor.author | JOHNSTON, S. | |
| dc.contributor.author | JANKOWSKI, F. | |
| dc.contributor.author | KEANE, E.F. | |
| dc.contributor.author | KEITH, M. | |
| dc.contributor.author | KRAMER, M. | |
| dc.contributor.author | POSSENTI, A. | |
| dc.date.issued | 2021 | |
| dc.description.abstractEn | We 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.iso | en | |
| dc.subject.en | pulsars: individual (PSR J0921–5202 | |
| dc.subject.en | PSR J1146–6610 | |
| dc.subject.en | PSR J1546–5925) | |
| dc.subject.en | stars: neutron | |
| dc.title.en | Timing observations of three Galactic millisecond pulsars | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1093/mnras/stab2474 | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph] | |
| dc.identifier.arxiv | 2108.03946 | |
| bordeaux.journal | Mon.Not.Roy.Astron.Soc | |
| bordeaux.page | 5303-5309 | |
| bordeaux.volume | 507 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-03327409 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-03327409v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Mon.Not.Roy.Astron.Soc&rft.date=2021&rft.volume=507&rft.issue=4&rft.spage=5303-5309&rft.epage=5303-5309&rft.au=LORIMER,%20D.R.&KAWASH,%20A.M.&FREIRE,%20P.C.C.&SMITH,%20D.A.&KERR,%20M.&rft.genre=article |
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