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K. Nandra (USRA)
An analysis of the relativistic iron K-alpha line in NGC 3516 is presented, based on a five-day ASCA observation with very high signal-to-noise ratio. The broad profile characteristic of an accretion disk surrounding a central black hole is confirmed. Kerr and Schwarzschild models can both fit the integrated profile, but both require emission very strongly concentrated in the inner disk. The constraints on the central black hole and inner accretion flow obtained from this integrated profile and the line variability will be discussed.
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