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Existence of hyperons in the pulsar PSRJ1614-2230

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arxiv 1209.6160 v1 pith:MULIBEK4 submitted 2012-09-27 nucl-th astro-ph.HE

A. Sulaksono , B. K. Agrawal This is my paper · ORCID
classification nucl-thastro-ph.HE
keywords hyperonspsrj1614-2230equationsexistencenuclearonlypulsarstate
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abstract

The possibility of existence of hyperons in the recently measured $2M_\odot$ pulsar PSRJ1614-2230 is explored using a diverse set of nuclear equations of state calculated within the relativistic mean-field models. Our results indicate that the nuclear equations of state compatible with heavy-ion data allow the hyperons to exist in the PSRJ1614-2230 only for significantly larger values for the meson-hyperon coupling strengths. The maximum mass configurations for these cases contain sizable hyperon fractions ($\sim 60%$) and yet masquared their counterpart composed of only nucleonic matter.

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  1. Approximating neutron-star radii using gravitational-wave only measurements with symbolic regression

    gr-qc 2025-04 conditional novelty 4.0 of 10

    A symbolic-regression fit, k2(M, log10 Lambda), approximates neutron-star radii from gravitational-wave-only mass and tidal-deformability measurements to within a few hundred meters for the tested equations of state.

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