The mass of the neutron star in the binary millisecond pulsar PSR J1012+5307

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dc.contributor.authorCallanan, Paul J.
dc.contributor.authorGarnavich, Peter M.
dc.contributor.authorKoester, D.
dc.contributor.funderNational Aeronautics and Space Administration
dc.date.accessioned2017-11-07T09:38:59Z
dc.date.available2017-11-07T09:38:59Z
dc.date.issued1998
dc.description.abstractWe have measured the radial velocity variation of the white dwarf secondary in the binary system containing the millisecond pulsar PSR J1012 + 5307. Combined with the orbital parameters of the radio pulsar, we infer a mass ratio q (=M-1/M-2) = 10.5 +/- 0.5 OUT optical spectroscopy has also allowed us to determine the mass of the white dwarf companion by fitting the spectrum to a grid of DA model atmospheres: we estimate M-2 = 0.16 +/- 0.02 M., and hence the mass of the neutron star is 1.64 +/- 0.22 M., where the error is dominated by that of M-2. The orbital inclination is 52 +/- 4 deg. For an initial neutron star mass of similar to 1.4 M., only a few tenths of a solar mass at most has been successfully accreted over the lifetime of the progenitor low-mass X-ray binary. If the initial mass of the secondary was similar to 1 M., our result suggests that the mass transfer may have been non-conservative.en
dc.description.sponsorshipNational Aeronautics and Space Administration (NAGW-4296)
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationCallanan, P. J., Garnavich, P. M. and Koester, D. (1998) 'The mass of the neutron star in the binary millisecond pulsar PSR J1012 + 5307', Monthly Notices of the Royal Astronomical Society, 298(1), pp. 207-211. doi: 10.1046/j.1365-8711.1998.01634.xen
dc.identifier.doi10.1046/j.1365-8711.1998.01634.x
dc.identifier.endpage211
dc.identifier.issn0035-8711
dc.identifier.issued1
dc.identifier.journaltitleMonthly Notices of the Royal Astronomical Societyen
dc.identifier.startpage207
dc.identifier.urihttps://hdl.handle.net/10468/4992
dc.identifier.volume298
dc.language.isoenen
dc.publisherOxford University Pressen
dc.relation.urihttps://academic.oup.com/mnras/article-lookup/doi/10.1046/j.1365-8711.1998.01634.x
dc.rights© 1998, Royal Astronomical Societyen
dc.subjectStarsen
dc.subjectBinariesen
dc.subjectGeneralen
dc.subjectNeutronen
dc.subjectPulsarsen
dc.subjectIndividualen
dc.subjectPSR J1012 + 5307en
dc.titleThe mass of the neutron star in the binary millisecond pulsar PSR J1012+5307en
dc.typeArticle (peer-reviewed)en
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