Abstract
We investigate the influence of the energy gap (Δ) of the color-flavor locked (CFL) quark phase on the bulk properties of hybrid stars. The relativistic mean field model is used for hadronic matter and the MIT bag model for CFL quark matter. In our calculation results, we find that with the increase of the CFL energy gap there exists a transition behavior, which goes from the hadron star range through the transition range into the CFL quark star range. The observation data of PRS J1614-2230 are in the hadron star range (with Δ < 40 MeV). We also find that with hyperons the equation of state (EOS) for the hybrid star matter with the CFL quark matter core has a small change, which can be disregarded.
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