Journal article

Intensity mapping cross-correlations II: HI halo models including shot noise

L Wolz, SG Murray, C Blake, JS Wyithe

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2019

Abstract

H I intensity mapping data traces the large-scale structure matter distribution using the integrated emission of neutral hydrogen gas (H I). Cross-correlation of the intensity maps with optical galaxy surveys can mitigate foreground and systematic effects, but has been shown to significantly depend on galaxy evolution parameters of the H I and the optical sample. Previously, we have shown that the shot noise of the cross-correlation scales with the H I content of the optical samples, such that the shot noise estimation infers the average H I masses of these samples. In this paper, we present an adaptive framework for the cross-correlation of H I intensity maps with galaxy samples using our i..

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University of Melbourne Researchers

Grants

Awarded by ARC Discovery Early Career Researcher Award


Awarded by Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO)


Funding Acknowledgements

LW is supported by an ARC Discovery Early Career Researcher Award (DE170100356). This research was conducted by the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020. This work was performed on the gSTAR national facility at Swinburne University of Technology. gSTAR is funded by Swinburne and the Australian Government's Education Investment Fund.