The moment of inertia of the neutron star PSR J0348+0432 and its proto neutron star

摘要

The difference of the moment of inertia of the neutron star PSR J0348 + 0432and that of its proto neutron star is studied in the framework of therelativistic mean field theory considering baryon octet. The temperature of theproto neutron star PSR J0348+0432 is chosen as T=5 MeV. The calculations showthat the central baryon number density of the proto neutron star PSR J0348+0432is in the range 0.623$\sim$0.813 fm$^{-3}$, decreased by 2$\sim$7\% compared tothat of the neutron star PSR J0348+0432. The radius of the proto neutron starPSR J0348+0432 is in the range 13.101$\sim$12.419 km, increased by 1$\sim$2\%compared to that of the neutron star PSR J0348+0432. The moment of inertia ofthe proto neutron star PSR J0348+0432 is in the range1.939$\times$10$^{45}$$\sim$1.638$\times$10$^{45}$ g.cm$^{2}$, increased byabout 2$\sim$7\% compared to that of the neutron star PSR J0348+0432.