Effect of quantizing magnetic field on the inner crusts of hot Neutron Stars
arXiv:2011.00296 · doi:10.1103/PhysRevC.104.025803
Abstract
In the present work we study the effects of strongly quantizing magnetic fields and finite temperature on the properties of inner crusts of hot neutron stars. The inner crust of a neutron star contains neutron-rich nuclei arranged in a lattice and embedded in gases of free neutrons and electrons. We describe the system within the Wigner-Seitz (WS) cell approximation. The nuclear energy is calculated using Skyrme model with SkM* interaction. To isolate the properties of nuclei we follow the subtraction procedure presented by Bonche, Levit and Vautherin, within the Thomas-Fermi approximation. We obtain the equilibrium properties of inner crust for various density, temperatures and magnetic fields by minimizing the free energy of the WS cell satisfying the charge neutrality and equilibrium conditions. We infer that at a fixed baryon density and temperature, strong quantizing magnetic field reduces the cell radii, neutron and proton numbers in the cell compared with the field free case. However, the nucleon number in the nucleus increases in presence of magnetic field. The free energy per nucleon also decreases in magnetized inner crust. On the other hand, we find that finite temperature tends to smear out the effects of magnetic field. Our results can be important in the context of process nucleosynthesis in the binary neutron star mergers.
arXiv comment6 figures
References in corpus (17)
- Magnetars
- Origin of the Heaviest Elements: the Rapid Neutron-Capture Process
- Statistical Model for a Complete Supernova Equation of State
- Matter in Strong Magnetic Fields
- Black Holes
- Equation of State of a Dense and Magnetized Fermion System
- Quantizing magnetic field and quark-hadron phase transition in a neutron star
- The key role of magnetic fields in binary neutron star mergers
- Properties of the outer crust of strongly magnetized neutron stars from Hartree-Fock-Bogoliubov atomic mass models
- Effect of strong magnetic fields on the crust-core transition and inner crust of neutron stars
- Isospin-rich nuclei in neutron star matter
- Crust-core transition of a neutron star: effects of the symmetry energy and temperature under strong magnetic fields
- Is the magnetic field making the inner crust of neutron stars more heterogeneous?
- Inner crusts of neutron stars in strongly quantising magnetic fields
- Neutron Star Crust in Strong Magnetic Fields
- Nuclei beyond the drip line
- Effect of the Coulomb interaction on the liquid-gas phase transition of nuclear matter