Constraints on the High Energy Continuum of Seyfert galaxies from RXTE Color-Color and Color-Flux Diagrams

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dc.creatorPetrucci, P. O.
dc.creatorPapadakis, I.
dc.creatorHaardt, F.
dc.creatorMaraschi, L.
dc.creatorMcHardy, I.
dc.creatorUttley, P.
dc.date2001-01-13
dc.date.accessioned2026-07-07T01:57:22Z
dc.date.available2026-07-07T01:57:22Z
dc.descriptionWe report on some results from a three-year program of RXTE observations of 4 Seyfert galaxies: NGC 4051, NGC 5548, MCG-6-30-15 and NGC 5506. We focus here on color-color and color-flux diagrams obtained using the count-rates of the PCA instrument in different energy ranges: 3--5, 5--7 and 7--10 keV. The data of the different sources show interesting trends in the different color-color and color-flux planes. These trends are quite similar from one source to the other, even in the case of the narrow line Seyfert 1 NGC 4051 which exhibits strong flux and spectral variability. We discuss these results in term of a simple spectral model: a power law with high energy cut-off + reflection + Iron line, with the scope of understanding the relations between the observed variations of different components and the physical causes of the variability.
dc.description6 pages, 3 figures (uses newpasp.sty included). To appear in Proc. of "X-ray astronomy 2000",(Palermo Sep. 2000), Eds. R. Giacconi, L. Stella, S. Serio, ASP Conf. Series, in press
dc.identifierhttps://arxiv.org/abs/astro-ph/0101221
dc.identifierhttp://arxiv.org/abs/astro-ph/0101221
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2360
dc.subjectAstrophysics
dc.titleConstraints on the High Energy Continuum of Seyfert galaxies from RXTE Color-Color and Color-Flux Diagrams
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