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Session 51 - Active Galactic Nuclei & Quasars.
Oral session, Thursday, June 12
North Main Hall A,

[51.03] Constraints on the Black Hole Mass in AGN from X-ray Observations

T. Yaqoob (NASA/GSFC)

The ASCA satellite has produced some high-quality data of AGN in the 0.5-10 keV band with high sensitivity and good energy resolution. ASCA has now resolved the complex shape of the iron K line in several AGN. Whilst rapid variability of the X-ray continuum is common in many AGN, so far there have been only three sources in which variability of the iron K line has been detected. Using observations of both the continuum and iron K line variability we show how an upper limit to the mass of the putative central black hole can be estimated from time lags and (2) relativistic time dilation.

Program listing for Thursday