How rapidly do neutron stars spin at birth?
Astrophysics
2008-11-24 v1
Abstract
We have studied the X-ray properties of ageing historical core-collapse supernovae in nearby galaxies, using archival data from Chandra, XMM-Newton and Swift. We found possible evidence of a young X-ray pulsar in SN 1968D and in few other sources, but none more luminous than ~ a few 10^{37} erg/s. We compared the observational limits to the X-ray pulsar luminosity distribution with the results of Monte Carlo simulations for a range of birth parameters. We conclude that a pulsar population dominated by periods <~ 40 ms at birth is ruled out by the data.
Keywords
Cite
@article{arxiv.0811.3605,
title = {How rapidly do neutron stars spin at birth?},
author = {Roberto Soria and Rosalba Perna and David Pooley and Luigi Stella},
journal= {arXiv preprint arXiv:0811.3605},
year = {2008}
}
Comments
to appear in the proceedings of the 10th Asian-Pacific Regional IAU Meeting (APRIM 2008), Kunming, China, Aug 2008