Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.298..207c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 298, Issue 1, pp. 207-211.
Astronomy and Astrophysics
Astronomy
57
Stars: Binaries: General, Neutron, Pulsars: Individual: Psr J1012+/-5307
Scientific paper
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. Our 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+/-0.02Msolar, and hence the mass of the neutron star is 1.64+/-0.22Msolar, where the error is dominated by that of M_2. The orbital inclination is 52+/-4 deg. For an initial neutron star mass of ~1.4Msolar, 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 ~1Msolar, our result suggests that the mass transfer may have been non-conservative.
Callanan Paul J.
Garnavich Peter M.
Koester Detlev
No associations
LandOfFree
The mass of the neutron star in the binary millisecond pulsar PSR J1012+5307 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The mass of the neutron star in the binary millisecond pulsar PSR J1012+5307, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The mass of the neutron star in the binary millisecond pulsar PSR J1012+5307 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1270733