HI and cosmology: What we need to know

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

There are three distinct regimes in which radio observations of the redshifted 21 cm line of HI can contribute directly to cosmology in unique ways. The regimes are naturally divided by redshift, from high to low, into: inflationary physics, the Dark Ages and reionization, and galaxy evolution and Dark Energy. Each measurement presents its own set of technical, theoretical, and observational challenges, making "what we need to know" not so much an astrophysical question at this early stage as a comprehensive experimental question. A wave of new pathfinder projects are exploring the fundamental aspects of what we need to know (and what we should expect to learn in the coming years) in order to achieve the goals of the Square Kilometer Array (SKA) and beyond.

Original languageEnglish (US)
Title of host publicationThe Evolution of Galaxies Through the Neutral Hydrogen Window
Pages296-302
Number of pages7
DOIs
StatePublished - Sep 11 2008
Externally publishedYes
EventThe Evolution of Galaxies Through the Neutral Hydrogen Window - Arecibo, Puerto Rico
Duration: Feb 1 2008Feb 3 2008

Publication series

NameAIP Conference Proceedings
Volume1035
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherThe Evolution of Galaxies Through the Neutral Hydrogen Window
CountryPuerto Rico
CityArecibo
Period2/1/082/3/08

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Keywords

  • Cosmology
  • Hydrogen
  • Intergalactic medium
  • Reionization

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Bowman, J. D. (2008). HI and cosmology: What we need to know. In The Evolution of Galaxies Through the Neutral Hydrogen Window (pp. 296-302). (AIP Conference Proceedings; Vol. 1035). https://doi.org/10.1063/1.2973604