ATCA-XXL Pilot Project: Constraining Black Hole Growth and Feedback Processes through Cosmic Times

Vernesa Smolcic, Malcolm Bremer, Mark Birkinshaw, Somak Raychaudhury, Cathy Horellou, Huub Rottgering, Florian Pacaud, Sean McGee, Chris Lidman, Marguerite Pierre, Ferrari Chiara, Andrea Comastri

Research output: Other contribution

Abstract

We propose a pilot survey with ATCA/CABB at 2.1 GHz to map ~5.5 sq.deg. of the XXL survey Southern field down to rms~17 micro-Jy/beam to test the feasibility of constructing a well-populated joint X-ray/radio AGN luminosity function in clusters and the general field out to the highest redshifts. Our observations will be crucial to address two still-open issues in modern observational cosmology: i) the cosmic evolution of black hole growth and ii) feedback processes in galaxies and galaxy clusters. The proposed observations are part of the XXL survey - an ongoing survey comprising the largest XMM-Newton project approved to date. It covers two extragalactic regions of ~25 sq.deg. each (~5e15erg/s/cm2; 0.5-2 keV). Several hundreds of new galaxy clusters are expected out to z~1.5-2, and >1e4 active galactic nuclei out to z~4. The main goals of the project are to constrain the Dark Energy equation of state using clusters of galaxies, and provide long lasting legacy value for studies of galaxy clusters and AGN. To achieve these goals radio observations, as proposed here, are a necessary complement.
Original languageEnglish
Publication statusPublished - 1 Oct 2012

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