The moment of inertia of the proto neutron star PSR J0348+0432 under neutrino trapped

摘要

The moment of inertia of the proto neutron star PSR J0348+0432 is studied in the framework of relativistic mean field theory under neutrino trapped. We find that the temperature of the PNS PSR J0348+0432 increases with the increase of the baryon number density and at the center of the star it is in the range T-c = 41.662-45.685 MeV. Corresponding to the observation mass 1.97-2.05 M-circle dot, the radius of the NS PSR J0348+0432 is in the range 12.948-12.16 km whereas that of the PNS PSR J0348+0432 is in the range 14.46-13.561 km. The radius of the PNS PSR J0348+0432 has increased by 11.7%-11.5% compared with that of the NS PSR J0348+0432. The central moment of inertia of the PNS PSR J0348+0432 is in the range 2.207x10(45)-1.914x10(45) g cm(2) whereas that of the NS PSR J0348+0432 is only in the range 1.9x10(45)-1.552x10(45) g cm(2). Compared with the moment of inertia of the NS PSR J0348+0432, the central moment of inertia of the PNS PSR J0348+0432 increases by 16%-23%.