AAS 199th meeting, Washington, DC, January 2002
Session 95. Accreting Neutron Stars
Display, Wednesday, January 9, 2002, 9:20am-6:30pm, Exhibit Hall

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[95.05] Long-Term Monitoring of Anomalous X-ray Pulsars

F. P. Gavriil (McGill), V. M. Kaspi (McGill / MIT), D. Chakrabarty (MIT )

The nature of anomalous X-ray pulsars (AXPs) has been a mystery since the discovery of the first example some 20 years ago. The leading model for AXPs is that they are isolated ultra-magnetized neutron stars, or "magnetars". It has also been suggested that AXPs might be accreting from an accretion disk made up of fall-back material. In order to test these models, the Rossi X-ray Timing Explorer (RXTE) has been used to observe all 5 known AXPs, as part of a long-term monitoring project. ln this poster we will present recent results from this project, including the sources' timing properties as deduced from phase-coherent studies, the sources' pulsed flux-time series and pulse morphology histories. We will also present recent results from searches for mini-outbursts as are observed in SGRs, as well as for quasi-periodic oscillations (QPOs) as observed in accreting X-ray pulsars.

This work is funded by NASA and NSERC.

If you would like more information about this abstract, please follow the link to http://www.physics.mcgill.ca/~gavriil/conferences/aas2002.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: gavriil@physics.mcgill.ca

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