Prospects for clustering and lensing measurements with forthcoming intensity mapping and optical surveys

A. Pourtsidou*, D. Bacon, R. Crittenden, R. B. Metcalf

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Downloads (Pure)

Abstract

We explore the potential of using intensity mapping surveys (MeerKAT, SKA) and optical galaxy surveys (DES, LSST) to detect HI clustering and weak gravitational lensing of 21 cm emission in auto- and cross-correlation. Our forecasts show that high-precision measurements of the clustering and lensing signals can be made in the near future using the intensity mapping technique. Such studies can be used to test the intensity mapping method, and constrain parameters such as the HI density ΩHI, the HI bias HI and the galaxy-HI correlation coefficient rHI-g.

Original languageEnglish
Pages (from-to)863-870
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Volume459
Issue number1
Early online date18 Mar 2016
DOIs
Publication statusPublished - 11 Jun 2016

Keywords

  • Cosmology: observations
  • Cosmology: theory
  • Gravitational lensing: weak
  • Large-scale structure of Universe
  • RCUK
  • STFC
  • ST/H002774/1

Fingerprint

Dive into the research topics of 'Prospects for clustering and lensing measurements with forthcoming intensity mapping and optical surveys'. Together they form a unique fingerprint.

Cite this