Asymmetric X-ray Pulsar Beam Emission

摘要: Many of the X-ray pulsars for which lightcurves have been presented in literature exhibit asymmetric emission beams. We postulate existence an off-centre magnetic dipole field embedded rotating neutron star and show that such a leads to varying rates matter transfer between accretion dise surface, over rotation period. Assuming rate onto surface is simply related luminosity, we most observed asymmetries can be accounted by this mechanism.