A Study of the Variable Anomalous X-Ray Pulsar 1RXS J170849-400910 using XMM-Newton Data

Details A Study of the Variable Anomalous X-Ray Pulsar 1RXS J170849-400910 using XMM-Newton Data A Study of the Variable Anomalous X-Ray Pulsar 1RXS J170849-400910 using XMM-Newton Data

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.552..471o&link_type=abstract

Proceedings of the 5th INTEGRAL Workshop on the INTEGRAL Universe (ESA SP-552). 16-20 February 2004, Munich, Germany. Scientific

Computer Science

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Scientific paper

We report the results of a 50 ks observation of the Anomalous X-ray Pulsar 1RXS J170849-400910 ob- tained with the XMM-Newton satellite in August 2003. We have studied the pulse-phase resolved spec- tral variations using data of unprecedented quality. We present results on the variations of the power-law and blackbody-like components in the spectrum as a function of pulse phase. We have searched for the presence for an absorption feature near 8 keV. This feature was seen in BeppoSAX data and was present during part of the duty cycle and interpreted as due to cyclotron resonance by Rea et al. (2003). How- ever, we cannot confirm the presence of this line and we will discuss the possible reasons for this discrep- ancy. Key words: Anomalous X-ray pulsars; 1RXS J170849-400910.

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