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- W1966382615 abstract "Abstract In many Seyfert galaxies the 2-20 keV X-ray spectrum typically softens with increasing X-ray flux. This effect has been explained by two different models; either pivoting of a single spectral component or relative changes in the normalisations of two components (a hard and a soft) which each have constant shape. We present a model-independent technique to analyse spectral variability, the ‘flux-flux’ plot, which shows conclusively that the two-component model is correct for some Seyfert galaxies (including the well studied MCG–6-30-15 ) but in other Seyferts spectral pivoting applies (e.g. NGC 4051). The nature of each of the spectral components in MCG–6-30-15 are briefly examined." @default.
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- W1966382615 date "2004-06-01" @default.
- W1966382615 modified "2023-09-25" @default.
- W1966382615 title "The nature of X-ray spectral variability in Seyfert Galaxies" @default.
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- W1966382615 doi "https://doi.org/10.1016/j.nuclphysbps.2004.04.042" @default.
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