HI galaxy simulations for the SKA: number counts and bias

2015/01/16 by Santos, Mario G., Alonso, David, Bull, Philip +2 · 1 citation
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM)

paper · doi:10.48550/arxiv.1501.03990

Abstract

This chapter describes the assumed specifications and sensitivities for HI galaxy surveys with SKA1 and SKA2. It addresses the expected galaxy number densities based on available simulations as well as the clustering bias over the underlying dark matter. It is shown that a SKA1 HI galaxy survey should be able to find around 5× 10⁶ galaxies over 5,000 deg² (up to z∼ 0.8), while SKA2 should find ∼ 10⁹ galaxies over 30,000 deg² (up to z∼ 2.5). The numbers presented here have been used throughout the cosmology chapters for forecasting.

Cited by

• Exploring future synergies for large-scale structure between gravitational waves and radio sources

Related

• Future HI Surveys on the road to the SKA
• Exploring Neutral Hydrogen and Galaxy Evolution with the SKA
• Cosmology from HI galaxy surveys with the SKA
• Redshifts for galaxies in radio continuum surveys from Bayesian model fitting of HI 21-cm lines
• The SKA view of the Neutral Interstellar Medium in Galaxies