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Strong magnetic fields: neutron stars with an extended inner crust

Authors: Helena Pais; Bruno Bertolino; Jianjun Fang; Xiaopeng Wang; Constança Providência

Ref.: Eur. Phys. J. A 57, 193-1-193-9 (2021)

Abstract: Using relativistic mean-field models, the formation of clusterized matter, as the one expected toexist 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≈5×10^16G to 5×10^17G, 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. Asa 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.

DOI: 10.1140/epja/s10050-021-00506-8

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