The contrasting magnetic fields of superconducting pulsars and magnetars
arXiv:1307.7020 · doi:10.1093/mnras/stt1894
Abstract
We study equilibrium magnetic field configurations in a neutron star (NS) whose core has type-II superconducting protons. Unlike the equations for normal matter, which feature no special field strength, those for superconductors contain the lower critical field, of order G. We find that the ratio of this critical field to the smooth-averaged stellar field at the crust-core boundary is the key feature dictating the field geometry. Our results suggest that pulsar and magnetar-strength fields have notably different configurations. Field decay for NSs with G could thus result in substantial internal rearrangements, pushing the toroidal field component out of the core; this may be related to observed magnetar activity. In addition, we calculate the magnetically-induced ellipticities of our models.
14 pages, 10 figures, 1 table. Minor changes to match published version
References in corpus (9)
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- Rapid Cooling of the Neutron Star in Cassiopeia A Triggered by Neutron Superfluidity in Dense Matter
- Unifying the observational diversity of isolated neutron stars via magneto-thermal evolution models
- Twisted-torus configurations with large toroidal magnetic fields in relativistic stars
- Hall equilibria with toroidal and poloidal fields: application to neutron stars
- The inside-out view on neutron star magnetospheres
- Flux tubes and the type-I/type-II transition in a superconductor coupled to a superfluid
- Type I and Two-Gap Superconductivity in Neutron Star Magnetism
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