21 cm Intensity Mapping

Abstract

Using the 21 cm line, observed all-sky and across the redshift range from 0 to 5, the large scale structure of the Universe can be mapped in three dimensions. This can be accomplished by studying specific intensity with resolution ~ 10 Mpc, rather than via the usual galaxy redshift survey. The data set can be analyzed to determine Baryon Acoustic Oscillation wavelengths, in order to address the question: 'What is the nature of Dark Energy?' In addition, the study of Large Scale Structure across this range addresses the questions: 'How does Gravity effect very large objects?' and 'What is the composition our Universe?' The same data set can be used to search for and catalog time variable and transient radio sources.

White Paper for the Astro2010 Astronomy Decadal Review

References in corpus (10)

• Probing Dark Energy with Baryonic Acoustic Oscillations from Future Large Galaxy Redshift Surveys
• Probing dark energy using baryonic oscillations in the galaxy power spectrum as a cosmological ruler
• Baryon Acoustic Oscillation Intensity Mapping as a Test of Dark Energy
• Redshifting Rings of Power
• Possibility of Precise Measurement of the Cosmological Power Spectrum With a Dedicated 21cm Survey After Reionization
• Baryonic Acoustic Oscillations in 21cm Emission: A Probe of Dark Energy out to High Redshifts
• The 21cm Power Spectrum After Reionization
• HI Signal from Reionization Epoch
• Reconstruction of HI power spectra with radio-interferometers to study dark energy
• Measurement of the baryonic acoustic oscillation scale in 21 cm intensity fluctuations during the reionisation era

Cited by in corpus (13)

• The Tianlai project: a 21cm cosmology experiment
• Blind foreground subtraction for intensity mapping experiments
• HI intensity mapping with MeerKAT: Calibration pipeline for multi-dish autocorrelation observations
• Fast simulations for intensity mapping experiments
• Hi intensity mapping with MeerKAT: Primary beam effects on foreground cleaning
• Gaussian Process Regression for foreground removal in HI intensity mapping experiments
• HI Intensity Mapping for Clustering-Based Redshift Estimation
• Measuring the Redshift of Reionization with a Modest Array of Low-Frequency Dipoles
• The HI Bias during the Epoch of Reionization
• Cosmology with the Square Kilometre Array by SKA-Japan
• Design, operation and performance of the PAON4 prototype transit interferometer
• Intensity Mapping with the 21-cm and Lyman Alpha Lines
• Spin-based removal of instrumental systematics in 21cm intensity mapping surveys