Cosmological Evolution of the Central Engine in High-Luminosity, High-Accretion Rate AGN
DOI:
https://doi.org/10.14311/APP.2014.01.0090Abstract
In this paper I discuss the status of observational studies aiming at probing the cosmological evolution of the central engine in high-luminosity, high-accretion rate Active Galactic Nuclei (AGN). X-ray spectroscopic surveys, supported by extensive multi-wavelength coverage, indicate a remarkable invariance of the accretion disk plus corona system, and of their coupling up to redshifts z≈6. Furthermore, hard X-ray (E >10 keV) surveys show that nearby Seyfert Galaxies share the same central engine notwithstanding their optical classication. These results suggest that the high-luminosity, high accretion rate quasar phase of AGN evolution is homogeneous over cosmological times.Downloads
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Published
2014-12-04
How to Cite
Guainazzi, M. (2014). Cosmological Evolution of the Central Engine in High-Luminosity, High-Accretion Rate AGN. Acta Polytechnica CTU Proceedings, 1(1), 90–95. https://doi.org/10.14311/APP.2014.01.0090
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