RXTE Observations of Centaurus X-3

Details RXTE Observations of Centaurus X-3 RXTE Observations of Centaurus X-3

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pasb.conf..237k&link_type=abstract

"Pulsars, AXPs and SGRs observed with BeppoSAX and Other Observatories, Proceedings of the International Workshop held in Marsal

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Scientific paper

We present a study of aperiodic variability from the X-ray binary pulsar Centaurus X-3. We have analyzed all archival data of Cen X-3 observed with the Rossi X-Ray Timing Explorer (RXTE). We extracted light curves both in the energy bands which include the iron K lines ("iron-band") and in the continuum X-ray bands which do not include the iron K lines. Then, we calculated cross spectrum functions between the iron-band and the remaining continuum bands. We discovered the significant time delay of temporal variation of iron-band emission as compared with that of the other energy X-rays by (0.98+/-0.45) ms, (0.39+/-0.10) ms, (1.24+/-1.08) ms, and (0.52+/-0.20) ms (1-sigma error). We also discovered that the time difference showed a general trend such that the higher energy X-rays advanced in comparison with the lower energy X-rays with the exception of the iron-band.

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