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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