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The Hubble Sphere Hydrogen Survey

Jeffrey B. Peterson·Kevin Bandura·Ue Li Pen
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Abstract

An all sky redshift survey, using hydrogen 21 cm emission to locate galaxies, can be used to track the wavelength of baryon acoustic oscillations imprints from z ~ 1.5 to z = 0. This will allow precise determination of the evolution of dark energy. A telescope made of fixed parabolic cylindrical reflectors offers substantial benefit for such a redshift survey. Fixed cylinders can be built for low cost, and long cylinders also allow low cost fast fourier transform techniques to be used to define thousands of simultaneous beams. A survey made with fixed reflectors naturally covers all of the sky available from it's site with good uniformity, minimizing sample variance in the measurement of the acoustic peak wavelength. Such a survey will produce about a billion redshifts, nearly a thousand times the number available today. The survey will provide a three dimensional mapping of a substantial fraction of the Hubble Sphere.

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Jeffrey B. Peterson, Kevin Bandura, Ue Li Pen. 2006-06-06. The Hubble Sphere Hydrogen Survey. https://arxiv.org/abs/astro-ph/0606104

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