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Journal Article

Constraint on the maximum mass of neutron stars using GW170817 event

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Shibata,  Masaru
Computational Relativistic Astrophysics, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1905.03656.pdf
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Citation

Shibata, M., Zhou, E., Kiuchi, K., & Fujibayashi, S. (2019). Constraint on the maximum mass of neutron stars using GW170817 event. Physical Review D, 100: 023015. doi:10.1103/PhysRevD.100.023015.


Cite as: https://hdl.handle.net/21.11116/0000-0003-BFDD-E
Abstract
We revisit the constraint on the maximum mass of cold spherical neutron stars
coming from the observational results of GW170817. We develop a new framework
for the analysis, which is more strict than previous ones, by employing both
energy and angular momentum conservation laws as well as solid results of
numerical-relativity simulations and of neutron stars in equilibrium. The new
analysis shows that the maximum mass of cold spherical neutron stars can be
only weakly constrained as $M_{\rm max} \alt 2.3M_\odot$. Our present result
gives the following caution for interpreting the future observational results:
Oversimplified analyses and/or inappropriate assumptions lead to an inaccurate
constraint on the maximum mass of neutron stars.