Thin Disk Models of Anomalous X-ray Pulsars
Astrophysics
2009-11-10 v1
Abstract
We discuss the options of the fall-back disk model of Anomalous X-Ray Pulsars (AXPs). We argue that the power-law index of the mass inflow rate during the propeller stage can be lower than those employed in earlier models. We take into account the effect of the super-critical mass inflow at the earliest stages on the inner radius of the disk and argue that the system starts as a propeller. Our results show that, assuming a fraction of the mass inflow is accreted onto the neutron star, the fall-back disk scenario can produce AXPs for acceptable parameters.
Keywords
Cite
@article{arxiv.astro-ph/0309029,
title = {Thin Disk Models of Anomalous X-ray Pulsars},
author = {K. Yavuz Ekşi and M. Ali Alpar},
journal= {arXiv preprint arXiv:astro-ph/0309029},
year = {2009}
}
Comments
6 pages, 2 figures, Proc. of the II BeppoSAX Meeting: "The Restless High-Energy Universe" (Amsterdam, May 5-8, 2003), E.P.J. van den Heuvel, J.J.M. in 't Zand, and R.A.M.J. Wijers Eds