Neutron star deformation due to poloidal-toroidal magnetic fields of arbitrary multipole order: a new analytic approach
A Mastrano, AG Suvorov, A Melatos
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2015
Arecipe is presented to construct an analytic, self-consistent model of a non-barotropic neutron star with a poloidal-toroidal field of arbitrary multipole order, whose toroidal component is confined in a torus around the neutral curve inside the star, as in numerical simulations of twisted tori. The recipe takes advantage of magnetic field aligned coordinates to ensure continuity of themass density at the surface of the torus. The density perturbation and ellipticity of such a star are calculated in general and for the special case of a mixed dipole-quadrupole field as a worked example. The calculation generalizes previous work restricted to dipolar, poloidal-toroidal and multipolar, poloid..View full abstract
We thank the reviewer for his instructive comments. This work was supported by a Discovery Project grant from the Australian Research Council and an Australian Postgraduate Award.