Neutron star cooling constraints for color superconductivity in hybrid stars
S. B. Popov, H. Grigorian, D. Blaschke
DOI 10.1103/PhysRevC.74.025803 · Physical Review C
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Abstract
We apply the recently developed logN–logS test of compact star cooling theories for the first time to hybrid stars with a color superconducting quark matter core. Although there is not yet a microscopically founded superconducting quark matter phase that would fulfill constraints from cooling phenomenology, we explore the hypothetical 2SC+X phase and show that the magnitude and density dependence of the X-gap can be chosen to satisfy a set of tests: temperature-age (T–t), the brightness constraint, logN–logS, and the mass spectrum constraint. The latter test appears as a new conjecture from the present investigation.
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