Can the maximum mass of neutron stars rule out any equation of state of dense stellar matter before gravity is well understood?

Abstract

Probably No! As an example, using soft EOSs consistent with existing terrestrial nuclear laboratory experiments for hybrid neutron stars containing a quark core described with MIT bag model using reasonable parameters, we show that the recently discovered new holder of neutron star maximum mass PSR J1614-2230 of $1.97\pm 0.04M_{\odot }$ can be well described by incorporating a Yukawa gravitational correction that is consistent with existing constraints from neutron-proton and neutron-lead scatterings as well as the spectroscopy of antiproton atoms.

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• Towards Understanding Astrophysical Effects of Nuclear Symmetry Energy
• What does a measurement of mass and/or radius of a neutron star constrain: Equation of state or gravity?
• Dense Stellar Matter with Strange Quark Matter Driven by Kaon Condensation
• Non-Newtonian gravity in finite nuclei