Do Young Neutron Stars Which Show Themselves As AXPs, SGRs and Radio Pulsars Accrete?

Details Do Young Neutron Stars Which Show Themselves As AXPs, SGRs and Radio Pulsars Accrete? Do Young Neutron Stars Which Show Themselves As AXPs, SGRs and Radio Pulsars Accrete?

2002-01-05

arxiv.org/abs/astro-ph/0201068v2

Int.J.Mod.Phys. D12 (2003) 825-832

Astronomy and Astrophysics

Astrophysics

16 Pages, 1 Figure

Scientific paper

10.1142/S0218271803003438

We examined the fall-back disk models, and in general accretion, proposed to explain the properties of anomalous X-ray pulsars (AXPs), soft gamma repeaters (SGRs), and radio pulsars (PSRs). We checked the possibility of some gas remaining around the neutron star after the supernova explosion. We also compared AXPs and SGRs with the X-ray pulsars in X-ray binaries. We conclude the existing models of accretion from a fall-back disk are insufficient to explain the nature of AXPs/SGRs, particularly the SGR bursts. We also discussed the proposed model of combination of magnetic dipole radiation and propeller torques in order to explain the evolution of radio pulsars on the P-\.{P} diagram. The predictions of this model contradict the observational data.

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