Bayesian inference of quark star equation of state using the NICER PSR J0030+0451 data

Abstract

We constrain the equation of state of quark stars within the Bayesian statistical approach using the mass and radius measurements of PSR J0030+0451 from NICER. Three types of bag models, with and without non-zero finite quark mass and/or superfluidity, are employed for quark stars made up with self-bound strange quark matter. We find the $90\%$ posterior credible boundary around the most probable values of the quark star maximum mass is $M_{\mathrm{TOV}}=2.38_{-0.23}^{+0.26}{M}_{\odot }$, within the model flexibility of the finite quark mass, the quark pairing gap, and the perturbative contribution from the one-gluon exchange. The radius of a canonical $1.4M_{\odot }$ quark star is $R_{1.4}\sim 12.3\mathrm{km}$, smaller than the results based on neutron star models.

7 pages, 4 figures, 3 tables; MNRAS in press. The analyses of quark star equation of state on the GW170817 and GW190425 data from LIGO/Virgo are reported in arXiv:2107.13997 (to appear in ApJL)

References in corpus (9)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• Cold Quark Matter
• Was GW170817 a canonical neutron star merger? Bayesian analysis with a third family of compact stars
• Neutron star equation of state: QMF modeling and applications
• Constraints on the maximum mass of neutron stars with a quark core from GW170817 and NICER PSR J0030+0451 data
• Constraining hadron-quark phase transition parameters within the quark-mean-field model using multimessenger observations of neutron stars
• Structure of Quark Star: A Comparative Analysis of Bayesian Inference and Neural Network Based Modeling

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