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HI and Cosmology: What We Need To Know

Bowman, Judd D. (2008) HI and Cosmology: What We Need To Know. In: The Evolution of Galaxies through the Neutral Hydrogen Window, Arecibo Observatory (Puerto Rico), 1–3 February 2008. AIP Conference Proceedings. No.1035. American Institute of Physics , Melville, NY, pp. 296-302. ISBN 978-0-7354-0558-5.

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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.

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Additional Information:© 2008 American Institute of Physics. Issue Date: 1 August 2008. JDB is supported by NASA through Hubble Fellowship grant HF-01205.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555.
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NASANAS 5-26555
Subject Keywords:cosmology, interstellar matter, red shift, cosmic background radiation, ionization, star formation
Series Name:AIP Conference Proceedings
Issue or Number:1035
Record Number:CaltechAUTHORS:BOWaipcp08b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12425
Deposited By: Archive Administrator
Deposited On:25 Nov 2008 19:30
Last Modified:08 Nov 2021 22:28

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