Modelling of surface magnetic field in neutron stars: application to radio pulsars

Abstract

We propose a vacuum gap (VG) model which can be applied uniformly for normal and high magnetic field pulsars. The model requires strong and non-dipolar surface magnetic field near the pulsar polar cap. We assume that the actual surface magnetic field in pulsars results from a superposition of global dipole field and crust-anchored small scale magnetic anomaly. We provide a numerical formalism for modelling such structures of surface magnetic field and explore it within the framework of VG model, which requires strong surface fields more than 10^{13} G.

Submitted to A&A, 11 pages, 9 figures

References in corpus (4)

• Torque Decay in the Pulsar (P,P_dot) Diagram. Effects of Crustal Ohmic Dissipation and Alignment
• On Radio Quiescence of Anomalous X-ray Pulsars and Soft Gamma-Ray Repeaters
• Vacuum Gap Model for PSR B0943+10
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