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http://hdl.handle.net/20.500.12386/23637
Titolo: | The High Time Resolution Universe survey - XI. Discovery of five recycled pulsars and the optical detectability of survey white dwarf companions | Autori: | Bates, S. D. Thornton, D. Bailes, M. Barr, E. Bassa, C. G. Bhat, N. D. R. BURGAY, MARTA Burke-Spolaor, S. Champion, D. J. Flynn, C. M. L. Jameson, A. Johnston, S. Keith, M. J. Kramer, M. Levin, L. Lyne, A. MILIA, S. Ng, C. Petroff, E. POSSENTI, ANDREA Stappers, B. W. van Straten, W. Tiburzi, C. |
Data pubblicazione: | 2015 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 446 | Fascicolo: | 4 | Da pagina:: | 4019 | Abstract: | We present the discovery of a further five recycled pulsar systems in the mid-Galactic latitude portion of the High Time Resolution Universe survey. The pulsars have rotational periods ranging from 2 to 66 ms, and four are in binary systems with orbital periods between 10.8 h and 9 d. Three of these binary systems are particularly interesting; PSR J1227-6208 has a pulse period of 34.5 ms and the highest mass function of all pulsars with near-circular orbits. The circular orbit suggests that the companion is not another neutron star, so future timing experiments may reveal one of the heaviest white dwarfs ever found (>1.3 M<SUB>☉</SUB>). Timing observations of PSR J1431-4715 indicate that it is eclipsed by its companion which has a mass indicating it belongs to the redback class of eclipsing millisecond pulsars. PSR J1653-2054 has a companion with a minimum mass of only 0.08 M<SUB>☉</SUB>, placing it among the class of pulsars with low-mass companions. Unlike the majority of such systems, however, no evidence of eclipses is seen at 1.4 GHz. | Acknowledgments: | The Parkes Observatory is part of the Australia Telescope which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. We thank the reviewer, Dipankar Bhattacharya, for suggestions which helped improve the manuscript. | URI: | http://hdl.handle.net/20.500.12386/23637 | URL: | https://academic.oup.com/mnras/article/446/4/4019/2892755 https://arxiv.org/pdf/1411.1288.pdf |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stu2350 | Bibcode ADS: | 2015MNRAS.446.4019B | Fulltext: | open |
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