AAS 197, January 2001
Session 125. Jets and Variability in AGN and Radio Galaxies
Oral, Thursday, January 11, 2001, 1:30-3:00pm, San Diego

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[125.09] Time resolved X-ray spectroscopy of Seyfert 1 galaxies

J.M. Gelbord (JHU), T. Yaqoob (JHU/GSFC), K.A. Weaver (GSFC/JHU)

We have performed a detailed analysis of the "long-look" ASCA observation of NGC 4151. We present results of time-resolved spectroscopy of the broad iron line using conventional spectral modeling and by examing the RMS spectra. The data exhibit complex changes in the iron line shape which do not appear to be simply related to the continuum. We discuss our results in the context of data from other high S/N observations of Seyfert 1 galaxies, many of which appear to point to the general conclusion that the line intensity does not respond to the continuum. We point out that this does not necessarily eliminate the possibility of reverberation mapping of the disk/black hole system since there are at least two sources in which the broad Fe-K line does appear to respond to the continuum. We emphasize that the overall variability properties of the Fe-K line, in the small sample of sources which have sufficient S/N, are different for each galaxy and a larger sample, studied with XMM, is required to reveal any general trends.

If you would like more information about this abstract, please follow the link to http://www.pha.jhu.edu/~jonathan/research.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: mailto:jonathan@jhu.edu

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