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

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dc.contributor.author Callanan, Paul J.
dc.contributor.author Garnavich, Peter M.
dc.contributor.author Koester, D.
dc.date.accessioned 2017-11-07T09:38:59Z
dc.date.available 2017-11-07T09:38:59Z
dc.date.issued 1998
dc.identifier.citation Callanan, 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.x en
dc.identifier.volume 298
dc.identifier.issued 1
dc.identifier.startpage 207
dc.identifier.endpage 211
dc.identifier.issn 0035-8711
dc.identifier.uri http://hdl.handle.net/10468/4992
dc.identifier.doi 10.1046/j.1365-8711.1998.01634.x
dc.description.abstract We 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.sponsorship National Aeronautics and Space Administration (NAGW-4296)
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Oxford University Press en
dc.relation.uri https://academic.oup.com/mnras/article-lookup/doi/10.1046/j.1365-8711.1998.01634.x
dc.rights © 1998, Royal Astronomical Society en
dc.subject Stars en
dc.subject Binaries en
dc.subject General en
dc.subject Neutron en
dc.subject Pulsars en
dc.subject Individual en
dc.subject PSR J1012 + 5307 en
dc.title The mass of the neutron star in the binary millisecond pulsar PSR J1012+5307 en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Paul Callanan, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: paulc@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder National Aeronautics and Space Administration
dc.description.status Peer reviewed en
dc.identifier.journaltitle Monthly Notices of the Royal Astronomical Society en
dc.internal.IRISemailaddress paulc@ucc.ie en


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