Discovery and Monitoring of a Broad Iron Line Complex in GRO J1655-40 by RXTE

Details Discovery and Monitoring of a Broad Iron Line Complex in GRO J1655-40 by RXTE Discovery and Monitoring of a Broad Iron Line Complex in GRO J1655-40 by RXTE

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aipc..714..109r&link_type=abstract

X-RAY TIMING 2003: Rossie and Beyond. AIP Conference Proceedings, Volume 714, pp. 109-112 (2004).

Computer Science

Black Holes, X-Ray, X- And Gamma-Ray Telescopes And Instrumentation, Spaceborne And Space Research Instruments, Apparatus, And Components

Scientific paper

We present results from detailed spectral analyses of 43 RXTE observations of GRO J1655-40 made throughout 1996. Spectra taken over 27 days separated by about one week each allow us to determine 3-200 keV continuum and line variability during the thermally dominated and steep power-law states seen. Inferred effective radii for maximum disk emission are consistently below 6 gravitational radii, confirming the Kerr nature of the black hole. The broad iron line is modeled by a broad emission line and an absorption edge at ~6.7 keV. We discuss the variation in line and continuum parameters, and suggest the inner portion of the accretion disk is warped and hot.

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