Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-04-16
Astrophys.J. 525 (1999) L45-L48
Astronomy and Astrophysics
Astrophysics
Replaced with revised version, 7 pages, 3 figs. To appear in Ap. J. Lett
Scientific paper
10.1086/312321
Using the most recent realistic effective interactions for nuclear matter with a smooth extrapolation to high densities including causality, we constrain the equation of state and calculate maximum masses of rotating neutron stars. First and second order phase transitions to, e.g., quark matter at high densities are included. If neutron star masses of $\sim 2.3M_\odot$ from quasi-periodic oscillations in low mass X-ray binaries are confirmed, a soft equation of state as well as strong phase transitions can be excluded in neutron star cores.
Heiselberg Henning
Hjorth-Jensen Morten
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