Evidence for a Massive Neutron Star from a Radial-velocity Study of the Companion to the Black-widow Pulsar PSR B1957+20

@article{Kerkwijk2010EvidenceFA,
  title={Evidence for a Massive Neutron Star from a Radial-velocity Study of the Companion to the Black-widow Pulsar PSR B1957+20},
  author={M. Kerkwijk and R. Breton and S. Toronto and Caltech},
  journal={The Astrophysical Journal},
  year={2010},
  volume={728},
  pages={95}
}
The most massive neutron stars constrain the behavior of ultra-dense matter, with larger masses possible only for increasingly stiff equations of state. Here, we present evidence that the black-widow pulsar, PSR B1957+20, has a high mass. We took spectra of its strongly irradiated companion and found an observed radial-velocity amplitude of K_(obs) = 324 ± 3 km s^(-1). Correcting this for the fact that, due to the irradiation, the center of light lies inward relative to the center of mass, we… Expand

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References

SHOWING 1-10 OF 44 REFERENCES
A two-solar-mass neutron star measured using Shapiro delay
The mass of the neutron star in Vela X-1
A Massive Neutron Star in the Globular Cluster M5
The masses of PSR J1911-5958A and its white dwarf companion
The Mass of a Millisecond Pulsar
...
1
2
3
4
5
...