Regular Article - Theoretical Physics
Strong magnetic fields: neutron stars with an extended inner crust
CFisUC, Department of Physics, University of Coimbra, 3004-516, Coimbra, Portugal
2 School of Physics and Physical Engineering, Qufu Normal University, 273165, Qufu, China
Accepted: 25 May 2021
Published online: 15 June 2021
Using relativistic mean-field models, the formation of clusterized matter, as the one expected to exist in the inner crust of neutron stars, is determined under the effect of strong magnetic fields. As already predicted from a calculation of the unstable modes resulting from density fluctuations at subsaturation densities, we confirm in the present work that for magnetic field intensities of the order of G to G, pasta phases may occur for densities well above the zero-field crust-core transition density. This confirms that the extension of the crust may be larger than expected. It is also verified that the equilibrium structure of the clusterized matter is very sensitive to the intensity of the magnetic fields. As a result, the decay of the magnetic field may give rise to internal stresses which may result on the yield and fracture of the inner crust lattice.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021