Decoupling luminosity and evolution in the spectral energy distribution of AGN

Computer Science

Scientific paper

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Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Sdss224159.43+1, Sdss000524.83-0, Sdss163408.64+3, Sdss092829.86+5, Sdss151520.56+0, Sdss123059.71+1, Sdss210225.75-0, Sdss163225.56+4, Sdss103855.33+5, Sdss103525.05+5, Sdss171145.53+6, Sdss104114.18+5, Sdss104239.66+5, Sdss104930.46+5, Sdss104859.67+5, Sdss104659.37+5, Sdss104156.51+5, Sdss171732.94+5, Sdss165231.30+3, Sdss075339.84+2, Sdss103829.74+5, Sdss003146.07+1, Sdss145503.47+0, Sdss090708.06+0, Sdss093759.44+5, Sdss163306.12+4, Sds

Scientific paper

With this proposal we will construct a comprehensive library of X-ray to mid-IR QSO spectral energy distributions for a single epoch (z=1), covering two orders of magnitude in luminosity. In doing so, we will decouple luminosity effects from evolutionary effects and so determine the amount of radiation that is absorbed and reprocessed by the torus, and how this depends on luminosity. The SED library will represent a fundamental resource to reconcile the conflicting results on AGN obscuration at different wavelengths, and for future investigations of the accretion history of massive black holes. Our SDSS sample has already been observed in the near and mid-IR with Spitzer; here we request XMM-Newton observations to provide the UV and X-ray parts of the SED library.

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