Instituto de Astrofísica e Ciências do Espaço

Exploring AGN Activity over Cosmic Time with the SKA

V. Smolčić, P. Padovani, J. Delhaize, N. Seymour, M. Jarvis, J. Afonso, M Magliocchetti, M. Huynh, M. Vaccari, A. Karim

Abstract
In this Chapter we present the motivation for undertaking both a wide and deep survey with the SKA in the context of studying AGN activity across cosmic time. With an rms down to 1 $μ$ Jy/beam at 1 GHz over 1,000 - 5,000 deg $^{2}$ in 1 year (wide tier band 1/2) and an rms down to 200 nJy/beam over 10 - 30 deg $^{2}$ in 2000 hours (deep tier band 1/2), these surveys will directly detect faint radio-loud and radio-quiet AGN (down to a 1 GHz radio luminosity of about $2 \times 10^{23}$ W/Hz at $z = 6$ ). For the first time, this will enable us to conduct detailed studies of the cosmic evolution of radio AGN activity to the cosmic dawn ( $z ≳ 6$ ), covering all environmental densities.

Proceedings of Advancing Astrophysics with the Square Kilometre Array (AASKA14)

2015 April

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