Anomalous X-ray pulsars and soft gamma-ray repeaters in supernova remnants
Astrophysics
2007-05-23 v1
Abstract
I consider the state of play regarding associations of supernova remnants (SNRs) with anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs). The three AXP/SNR associations are convincing, and are consistent with AXPs being young, low-velocity neutron stars. The three SGR/SNR associations are far more likely to be chance superpositions, and rely on SGRs being high velocity (>1000 km/s) objects. These results imply either that AXPs evolve into SGRs, or that SGRs and AXPs represent different populations of object.
Keywords
Cite
@article{arxiv.astro-ph/9911190,
title = {Anomalous X-ray pulsars and soft gamma-ray repeaters in supernova remnants},
author = {B. M. Gaensler},
journal= {arXiv preprint arXiv:astro-ph/9911190},
year = {2007}
}
Comments
4 pages, uses newpasp.sty. To appear in ``Pulsar Astronomy - 2000 and Beyond'' (Kramer, Wex and Wielebinski eds)