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.
Cite
@article{arxiv.0902.3091,
title = {21 cm Intensity Mapping},
author = {Jeffrey B. Peterson and Roy Aleksan and Reza Ansari and Kevin Bandura and Dick Bond and John Bunton and Kermit Carlson and Tzu-Ching Chang and Fritz DeJongh and Matt Dobbs and Scott Dodelson and Hassane Darhmaoui and Nick Gnedin and Mark Halpern and Craig Hogan and Jean-Marc Le Goff and Tiehui Ted Liu and Ahmed Legrouri and Avi Loeb and Khalid Loudiyi and Christophe Magneville and John Marriner and David P. McGinnis and Bruce McWilliams and Marc Moniez and Nathalie Palanque-Delabruille and Ralph J. Pasquinelli and Ue-Li Pen and Jim Rich and Vic Scarpine and Hee-Jong Seo and Kris Sigurdson and Uros Seljak and Albert Stebbins and Jason H. Steffen and Chris Stoughton and Peter T. Timbie and Alberto Vallinotto and Stuart Wyithe and Christophe Yeche},
journal= {arXiv preprint arXiv:0902.3091},
year = {2009}
}
Comments
White Paper for the Astro2010 Astronomy Decadal Review