Measuring neutron-star properties via gravitational waves from binary mergers

Details Measuring neutron-star properties via gravitational waves from binary mergers Measuring neutron-star properties via gravitational waves from binary mergers

2011-06-08

arxiv.org/abs/1106.1616v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

5 pages, 4 figures, accepted by Phys. Rev. Lett., revised version including referee comments

Scientific paper

We demonstrate by a large set of merger simulations for symmetric binary neutron stars (NSs) that there is a tight correlation between the frequency peak of the postmerger gravitational-wave (GW) emission and the physical properties of the nuclear equation of state (EoS), e.g. expressed by the radius of the maximum-mass Tolman-Oppenheimer-Volkhoff configuration. Therefore, a single measurement of the peak frequency of the postmerger GW signal will constrain the NS EoS significantly. For plausible optimistic merger-rate estimates a corresponding detection with Advanced LIGO is likely to happen within an operation time of roughly a year.

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