Publication date: Jun 2010
Abstract:
Set of neutron star observational results is used to test some selected
equations of state of dense nuclear matter. The first observational
result comes from the mass-baryon number relation for pulsar B of the
double pulsar system J0737-3039. The second one is based on the
mass-radius relation coming from observation of the thermal radiation of
the neutron star RX J1856.35-3754. The third one follows the population
analysis of isolated neutron star thermal radiation sources. The last
one is the test of maximum mass. The equation of state of asymmetric
nuclear matter is given by the parametrized form of the relativistic
Brueckner-Hartree-Fock mean field, and we test selected parametrization
that represent fits of full relativistic mean field calculation. We show
that only one of them is capable to pass the observational tests. This
equation of state represents the first equation of state that is able to
explain all the mentioned observational tests, especially the very
accurate test given by the double pulsar even if no mass loss is
assumed.
Authors:
Urbanec, M.; Beták, E.; Stuchlík, Z.;