A precise mass measurement of the intermediate-mass binary pulsar PSR J1802 – 2124

Ferdman, R. D. ORCID: https://orcid.org/0000-0002-2223-1235, Stairs, I. H., Kramer, M., McLaughlin, M. A., Lorimer, D. R., Nice, D. J., Manchester, R. N., Hobbs, G., Lyne, A. G., Camilo, F., Possenti, A., Demorest, P. B., Cognard, I., Desvignes, G., Theureau, G., Faulkner, A. and Backer, D. C. (2010) A precise mass measurement of the intermediate-mass binary pulsar PSR J1802 – 2124. Astrophysical Journal, 711 (2). pp. 764-771. ISSN 0004-637X

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PSR J1802 – 2124 is a 12.6 ms pulsar in a 16.8 hr binary orbit with a relatively massive white dwarf (WD) companion. These properties make it a member of the intermediate-mass class of binary pulsar (IMBP) systems. We have been timing this pulsar since its discovery in 2002. Concentrated observations at the Green Bank Telescope, augmented with data from the Parkes and Nançay observatories, have allowed us to determine the general relativistic Shapiro delay. This has yielded pulsar and WD mass measurements of 1.24 ± 0.11 M ☉ and 0.78 ± 0.04 M ☉ (68% confidence), respectively. The low mass of the pulsar, the high mass of the WD companion, the short orbital period, and the pulsar spin period may be explained by the system having gone through a common-envelope phase in its evolution. We argue that selection effects may contribute to the relatively small number of known IMBPs.   An erratum has been published for this article: https://iopscience.iop.org/article/10.1088/0004-637X/713/1/710

Item Type: Article
Additional Information: An erratum has been published for this article: ERRATUM: "A PRECISE MASS MEASUREMENT OF THE INTERMEDIATE-MASS BINARY PULSAR PSR J1802−2124" (2010, ApJ, 711, 764), R. D. Ferdman, I. H. Stairs, M. Kramer, M. A. McLaughlin, D. R. Lorimer, D. J. Nice, R. N. Manchester, G. Hobbs, A. G. Lyne, F. Camilo et al. The Astrophysical Journal, Volume 713, Number 1. DOI 10.1088/0004-637X/713/1/710. Published 2010 March 24.
Depositing User: LivePure Connector
Date Deposited: 12 Jul 2018 14:31
Last Modified: 12 Jul 2023 15:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/67602
DOI: 10.1088/0004-637X/711/2/764

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