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6 papers · 2 filters
Observational constraints on quark matter in neutron stars
Nana Pan, Xiaoping Zheng
We estimate the constraints of observational mass and redshift on the properties of equations of state for quarks in the compact stars. We discuss two scenarios: strange stars and…
Thermal evolution of rotating hybrid stars
kang Miao, Zheng Xiaoping
As a neutron star spins down, the nuclear matter continuously is converted into quark matter due to the core density increase and then latent heat is released. We have investigated…
Implication of Existence of Hybrid stars and Theoretical Expectation of Submillisecond Pulsars
Xiaoping Zheng, Nana Pan, Shuhua Yang +3
We derive the bulk viscous damping timescale of hybrid stars, neutron stars with quark matter core. The r-mode instability windows of the stars show that the theoretical results ar…
Thermal evolution of rotating strange stars in color superconductivity phase
X. P. Zheng, X. Zhou, Y. W. Yu
Under the combination effect of the recommencement heating due to spin-down of strange stars and the heat perseveration due to weak conduct heat of the crust, the Cooper pair break…
Bulk viscosity of Mixed nucleon-hyperon-quark Matter in Neutron stars
Nana Pan, Xiaoping Zheng, Jiarong Li
We calculate the coefficient of bulk viscosity by considering the non-leptonic weak interactions in the cores of hybrid stars with both hyperons and quarks. We first determine the…
Effect of r-mode instability on the evolution of isolated strange stars
X. P. Zheng, Y. W. Yu, J. R. Li
We studied the evolution of isolated strange stars synthetically, considering the influence of {\it r-}mode instability. Our results show that the cooling of strange stars with non…