Accretion-Assisted Spindown of Young Radio Pulsars

Details Accretion-Assisted Spindown of Young Radio Pulsars Accretion-Assisted Spindown of Young Radio Pulsars

2001-03-20

arxiv.org/abs/astro-ph/0103326v2

Astronomy and Astrophysics

Astrophysics

minor changes, final version accepted to ApJL

Scientific paper

10.1086/320927

We present a model for the spindown of young radio pulsars in which the neutron star loses rotational energy not only by emitting magnetic dipole radiation but also by torquing a surrounding accretion disk produced by supernova fallback. The braking index predicted in our model is in general less than n=3 (the value for pure dipole magnetic radiation), in agreement with the reported values of n<3 for five young radio pulsars. With an accuracy of 30% or better, our model reproduces the age, braking index and third frequency derivative of the Crab pulsar for a disk accretion rate in the range 3 x 10^16 - 10^17 g/s.

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