English

An observational review of accretion-driven millisecond X-ray pulsars

Astrophysics 2009-11-10 v1

Abstract

I present an observational review of the five currently known accretion-driven millisecond X-ray pulsars. A prominent place in this review is given to SAX J1808.4-3658; it was the first such system discovered and currently four outbursts have been observed from this source. This makes SAX J1808.4-3658 the best studied example of the group. Its most recent outburst in October 2002 is of particular interest because of the discovery of two simultaneous kilohertz quasi-periodic oscillations and nearly coherent oscillations during type-I X-ray bursts. This is the first time that such phenomena are observed in a system for which the neutron star spin frequency is exactly known. The other four systems were discovered within the last two years and only limited results have been published. Since new exiting results are to be expected in the future for all five sources, this review will only represent a snap-shot of the current observational knowledge of accretion-driven millisecond X-ray pulsars. A more extended and fully up-to-date review can be found at http://zon.wins.uva.nl/~rudy/admxp/.

Keywords

Cite

@article{arxiv.astro-ph/0309347,
  title  = {An observational review of accretion-driven millisecond X-ray pulsars},
  author = {Rudy Wijnands},
  journal= {arXiv preprint arXiv:astro-ph/0309347},
  year   = {2009}
}

Comments

To appear in the Proceedings of the Symposium "The Restless High-Energy Universe", 5-8 May 2003, Amsterdam, The Netherlands, E.P.J. van den Heuvel, J.J.M. in 't Zand, and R.A.M.J. Wijers Eds. A more extended and always fully-up-to-date version of this review can be found at http://zon.wins.uva.nl/~rudy/admxp/