Publication Date:
2021-07-16
Description:
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 $90{{
m per cent}}$ posterior credible boundary around the most probable values of the quark star maximum mass is $M_{
m TOV}=2.38_{-0.23}^{+0.26}, M_{odot }$, 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 $1.4 , M_{odot }$ quark star is $R_{
m 1.4}sim 12.3, {
m km}$, smaller than the results based on neutron star models.
Print ISSN:
0035-8711
Electronic ISSN:
1365-2966
Topics:
Physics
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