Large Scale Impact of the Cosmological Population of Expanding Radio Galaxies

Abstract

We seek to compute the fraction of the volume of the Universe filled by expanding cocoons of the cosmological population of radio galaxies over the Hubble time as well as the magnetic field infused by them, in order to assess their importance in the cosmic evolution of the Universe. Using N-body $\Lambda$CDM simulations, radio galaxies distributed according to the observed radio luminosity function are allowed to evolve in a cosmological volume as using well defined prescriptions for their expansion. We find that the radio galaxies permeate $10-30$ of the total volume with $\sim 10^{-8}$ G magnetic field by the present epoch.

5 pages, 3 figures, ApJL. This is slightly longer than the version accepted for publication and has colored figures

References in corpus (9)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Heating Hot Atmospheres with Active Galactic Nuclei
• Suppression of star formation in early-type galaxies by feedback from supermassive black holes
• Measuring the accretion rate and kinetic luminosity functions of supermassive black holes
• Metal enriched gaseous halos around distant radio galaxies: Clues to feedback in galaxy formation
• Anisotropic Galactic Outflows and Enrichment of the Intergalactic Medium. I: Monte Carlo Simulations
• Testing Models of Radio Galaxy Evolution and the Cosmological Impact of FR II Radio Galaxies
• Energetic Impact of Jet Inflated Cocoons in Relaxed Galaxy Clusters
• Influence of AGN Outbursts on the Surrounding Galaxies

Cited by in corpus (4)

• Quasar outflows at $z\ge 6$: the impact on the host galaxies
• Anisotropic AGN Outflows and Enrichment of the Intergalactic Medium
• Radio Source Evolution on Galactic Scales
• IMPETUS: New Cloudy's radiative tables for accretion onto a galaxy black hole