HI galaxy simulations for the SKA: number counts and bias

Mario G. Santos; David Alonso; Philip Bull; Marta Silva; Sahba Yahya

HI galaxy simulations for the SKA: number counts and bias

Mario G. Santos, David Alonso, Philip Bull, Marta Silva, Sahba Yahya

Astronomy and Astrophysics Theory Group

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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 $5\times 10^6$ galaxies over 5,000 deg$^2$ (up to $z\sim 0.8$), while SKA2 should find $\sim 10^9$ galaxies over 30,000 deg$^2$ (up to $z\sim 2.5$). The numbers presented here have been used throughout the cosmology chapters for forecasting.

Original language	English
Publication status	Published - 16 Jan 2015

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astro-ph.CO
astro-ph.IM

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1501.03990v1

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title = "HI galaxy simulations for the SKA: number counts and bias",

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 $5\times 10^6$ galaxies over 5,000 deg$^2$ (up to $z\sim 0.8$), while SKA2 should find $\sim 10^9$ galaxies over 30,000 deg$^2$ (up to $z\sim 2.5$). The numbers presented here have been used throughout the cosmology chapters for forecasting. ",

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author = "Santos, {Mario G.} and David Alonso and Philip Bull and Marta Silva and Sahba Yahya",

note = "This article is part of the 'SKA Cosmology Chapter, Advancing Astrophysics with the SKA (AASKA14), Conference, Giardini Naxos (Italy), June 9th-13th 2014'",

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AU - Alonso, David

AU - Bull, Philip

AU - Silva, Marta

AU - Yahya, Sahba

N1 - This article is part of the 'SKA Cosmology Chapter, Advancing Astrophysics with the SKA (AASKA14), Conference, Giardini Naxos (Italy), June 9th-13th 2014'

PY - 2015/1/16

Y1 - 2015/1/16

N2 - 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 $5\times 10^6$ galaxies over 5,000 deg$^2$ (up to $z\sim 0.8$), while SKA2 should find $\sim 10^9$ galaxies over 30,000 deg$^2$ (up to $z\sim 2.5$). The numbers presented here have been used throughout the cosmology chapters for forecasting.

AB - 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 $5\times 10^6$ galaxies over 5,000 deg$^2$ (up to $z\sim 0.8$), while SKA2 should find $\sim 10^9$ galaxies over 30,000 deg$^2$ (up to $z\sim 2.5$). The numbers presented here have been used throughout the cosmology chapters for forecasting.

KW - astro-ph.CO

KW - astro-ph.IM

M3 - Preprint

BT - HI galaxy simulations for the SKA

ER -

HI galaxy simulations for the SKA: number counts and bias

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Keywords

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