Existence of hyperons in the pulsar PSRJ1614-2230
arXiv:1209.6160 · doi:10.1016/j.nuclphysa.2012.09.006
Abstract
The possibility of existence of hyperons in the recently measured $2M_\odot$ pulsar PSRJ1614-2230 is explored using a diverse set of nuclear equations of state calculated within the relativistic mean-field models. Our results indicate that the nuclear equations of state compatible with heavy-ion data allow the hyperons to exist in the PSRJ1614-2230 only for significantly larger values for the meson-hyperon coupling strengths. The maximum mass configurations for these cases contain sizable hyperon fractions ($\sim 60%$) and yet masquared their counterpart composed of only nucleonic matter.
24 page including 8 figures, Nuclear Phys. A (in press)