21 cm intensity mapping with the Five hundred metre Aperture Spherical Telescope

Abstract

This paper describes a programme to map large-scale cosmic structures on the largest possible scales by using the Five hundred metre Aperture Spherical Telescope (FAST) to make a 21 cm (red-shifted) intensity map of the sky for the range $0.5<z<2.5$. The goal is to map to the angular and spectral resolution of FAST a large swath of the sky by simple drift scans with a transverse set of beams. This approach would be complementary to galaxy surveys and could be completed before the Square Kilometre Array (SKA) could begin a more detailed and precise effort. The science would be to measure the large-scale structure on the size of the baryon acoustic oscillations and larger scale, and the results would be complementary to its contemporary observations and significant. The survey would be uniquely sensitive to the potential very large-scale features from inflation at the Grand Unified Theory (GUT) scale and complementary to observations of the cosmic microwave background.

15 pages, 10 figures, published version. arXiv admin note: text overlap with arXiv:0712.0497 by other authors

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• Planck 2015 results. XIII. Cosmological parameters
• BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
• The Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST) Project
• Late-time cosmology with 21cm intensity mapping experiments
• Canadian Hydrogen Intensity Mapping Experiment (CHIME) Pathfinder
• Extending cosmological tests of General Relativity with the Square Kilometre Array
• Wiggly Whipped Inflation
• Fast simulations for intensity mapping experiments
• Just enough inflation: power spectrum modifications at large scales
• Galaxy redshift surveys selected by neutral hydrogen using FAST
• BINGO: a single dish approach to 21cm intensity mapping
• GMIMS: The Global Magneto-Ionic Medium Survey

Cited by in corpus (25)

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• Cosmological parameter forecasts for HI intensity mapping experiments using the angular power spectrum
• Forecast for FAST: from Galaxies Survey to Intensity Mapping
• Absolute Calibration of Diffuse Radio Surveys at 45 and 150 MHz
• Detecting the power spectrum turnover with HI intensity mapping
• Gravitational Lensing of Cosmological 21cm Emission
• Prospects for measuring dark energy with 21 cm intensity mapping experiments
• The BINGO Project VI: HI Halo Occupation Distribution and Mock Building
• Impact of astrophysics on cosmology forecasts for 21 cm surveys
• Cross-correlating 21 cm and galaxy surveys: implications for cosmology and astrophysics
• The clustering of critical points in the evolving cosmic web
• The Tianlai dish array low-z surveys forecasts
• Synergies across the spectrum for particle dark matter indirect detection: how HI intensity mapping meets gamma rays
• Recovering 21-cm signal from simulated FAST intensity maps
• Forecasts of cosmological constraints from HI intensity mapping with FAST, BINGO & SKA-I
• Simulations for 21 cm radiation lensing at EoR redshifts
• HI intensity mapping with FAST
• Cross-Correlation Forecast of CSST Spectroscopic Galaxy and MeerKAT Neutral Hydrogen Intensity Mapping Surveys
• Testing the consistency of early and late cosmological parameters with BAO and CMB data
• The parameter-free Finger-Of-God model and its application to 21cm intensity mapping
• A Multi-messenger view of Cosmic Dawn: Conquering the Final Frontier
• A first quantification of the effects of absorption for HI Intensity Mapping experiments
• The Completely Hackable Amateur Radio Telescope (CHART) Project