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Towards a Better Understanding of Active Galactic Nuclei

Published online by Cambridge University Press:  25 May 2016

P. Padovani
P. Padovani*
Affiliation:
Dipartimento di Fisica, II Università di Roma “Tor Vergata”

Abstract

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Active Galactic Nuclei (AGN) are ideal sources for multi-wavelength studies as their emission can cover almost 20 orders of magnitude in frequency from the radio to the γ-ray band. After reviewing their basic properties, I will assess how well we know the multifrequency spectra of AGN as a class. I will then briefly illustrate how currently available and forthcoming sky surveys will help in addressing some of the open questions of AGN studies. Finally, an analysis of the problem of the missing Type 2 QSO will exemplify the dangers of monochromatic sky surveys for AGN.

Type
Part 5. Extra-Galactic Astronomy
Information
Symposium - International Astronomical Union , Volume 179: New Horizons from Multi-Wavelength Sky Surveys , 1998 , pp. 257 - 265
Copyright
Copyright © Kluwer 1998 

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