Constraining equation of state of neutron star using neutron star-black hole mergers

@misc{dubey2026constraining,
  title = {{Constraining equation of state of neutron star using neutron star-black hole mergers}},
  author = {Vasudev Dubey and Rahul Kashyap and Yugesh Bhoge},
  howpublished = {arXiv},
  year = {2026},
  month = aug,
  doi = {10.48550/arxiv.2608.30995},
  eprint = {2608.30995},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.30995},
}

TY  - UNPB
TI  - Constraining equation of state of neutron star using neutron star-black hole mergers
AU  - Vasudev Dubey
AU  - Rahul Kashyap
AU  - Yugesh Bhoge
PY  - 2026
DA  - 2026/08/31
PB  - arXiv
DO  - 10.48550/arxiv.2608.30995
UR  - https://arxiv.org/abs/2608.30995
AB  - In this work, we study tidal effects that can be observed in gravitational wave transient from neutron star-black hole (NSBH) mergers. It has been well known that neutron star's tidal deformation has imprint of equation of state and hence composition of neutron star matter. Compared to binary neutron star mergers, where we observe a combined effect of two neutron stars by measuring the parameter known as lambda tilde. In neutron star black hole mergers, we measure the tidal deformability of the neutron star component clearly. In this work, we study the feasibility of measuring the bare tidal deformability of a neutron star with planned gravitational detectors in the near and far future. We use the parameter estimation computation framework, Bilby is used to perform Bayesian inference for hundreds of NSBH mergers in current and future GW detector networks and obtain the posterior probability distribution functions of binary parameters. We find that we need at least 20 events to clearly distinguish the equation state of neutron stars in future detectors, including the Einstein Telescope and Cosmic Explorer.
ER  -