Interaction and ablation of fall-back disks in isolated neutron stars

Details Interaction and ablation of fall-back disks in isolated neutron stars Interaction and ablation of fall-back disks in isolated neutron stars

2007-09-24

arxiv.org/abs/0709.3730v1

Astronomy and Astrophysics

Astrophysics

9 pages; to be published in Monthly Notices of the Royal Astronomical Society

Scientific paper

10.1111/j.1365-2966.2007.12428.x

An analysis of ablation processes is made for a fall-back disk with inner and outer radii external to the neutron-star light cylinder. The calculated ablation rate leads, with certain other assumptions, to a simple expression relating the inner radius and mean mass per unit area of any long-lived fall-back disk. Expressions for the torque components generated by interaction with the pulsar wind are obtained. It is not impossible that these could be responsible for small observable variations in pulse shape and spin-down rate but they are unlikely to be the source of the periodic changes seen in several pulsars.

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