The X-ray variability properties of PG quasars: XMM-Newton results

E.Jimenez-Bailon; E.Piconcelli (European Space Astronomy Center of ESA; M.Guainazzi; Spain)

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arxiv astro-ph/0409438 v1 pith:EV6ZQCK6 submitted 2004-09-17 astro-ph

The X-ray variability properties of PG quasars: XMM-Newton results

M.Guainazzi , E.Jimenez-Bailon , E.Piconcelli (European Space Astronomy Center of ESA , Spain) This is my paper

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This paper presents preliminary results of a systematic study on the X-ray spectral variability of PG quasars with XMM-Newton. We concentrate on those objects, whose X-ray spectra are well fit in the framework of the ``double Comptonization'' model. On short (<1000 seconds) timescales, variability between the soft (E<2 keV) and the hard (E>2 keV) bands is uncorrelated. In the two objects, for which observations at different epochs are available, spectral variability in the soft X-ray regime is unveiled. Its timescale is constrained in the range between ~1 week and ~1 year.

The X-ray variability properties of PG quasars: XMM-Newton results

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