Searching for Early Ionization with the Primeval Structure Telescope

Details Searching for Early Ionization with the Primeval Structure Telescope Searching for Early Ionization with the Primeval Structure Telescope

2005-02-01

arxiv.org/abs/astro-ph/0502029v1

Astronomy and Astrophysics

Astrophysics

11 pages, 5 figures, submitted to the proceedings of "Science with Wavelengths on Human Scales"

Scientific paper

The Primeval Structure Telescope (PaST), will be used search for and study the era the of the first luminous objects, the epoch of reionization. The first stars ionized the gas around them producing a pattern of ionization that reflects the large scale density structure present at the time. The PaST array will be used in an attempt to sense and study this ionization, by mapping the brightness of 21-cm neutral hydrogen emission at redshifts from 6 to 25. This emission disappears on ionization, allowing the study of large scale structure and of star formation at this very early epoch. The 10,000 antenna PaST array will be used to image ionized structures by creating 1 million pixel images of the sky. The angular scales of the images to be produced span from 5 arc-minutes to 10 degrees. The array is currently under construction and over 2000 antennas have been installed.

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