TRANSITION DENSITY AND PRESSURE AT THE INNER EDGE OF NEUTRON STAR CRUSTS Conference Paper uri icon

abstract

  • Using the nuclear symmetry energy that has been recently constrained by the isospin diffusion data in intermediate-energy heavy ion collisions, we have studied the transition density and pressure at the inner edge of neutron star crusts, and they are found to be 0.040 fm -3 ≤ ρt ≤ 0.065 fm -3 and 0.01 MeV / fm 3 ≤ Pt ≤ 0.26 MeV / fm 3, respectively, in both the dynamical and thermodynamical approaches. We have also found that the widely used parabolic approximation to the equation of state of asymmetric nuclear matter gives significantly higher values of core-crust transition density and pressure, especially for stiff symmetry energies. With these newly determined transition density and pressure, we have obtained an improved relation between the mass and radius of neutron stars.

published proceedings

  • International Journal of Modern Physics E

author list (cited authors)

  • XU, J., KO, C. M., CHEN, L., LI, B., & MA, H

complete list of authors

  • XU, JUN||KO, CHE MING||CHEN, LIE-WEN||LI, BAO-AN||MA, HONG-RU

publication date

  • January 1, 2010 11:11 AM