Hydrogen Intensity and Real-time Analysis eXperiment
The Hydrogen Intensity and Real-time Analysis eXperiment (HIRAX) is an interferometric array of 1024 6-meter (20ft) diameter radio telescopes, operating at 400-800MHz, that will be deployed at the Square Kilometer Array site in the Karoo region of South Africa. The array is designed to measure red-shifted 21-cm hydrogen line emission on large angular scales, in order to map out the baryon acoustic oscillations, and constrain models of dark energy and dark matter.
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Square Kilometre Array
International radio telescope project

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64 antenna radio telescope. South Africa (launched 2018)
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Radio telescope in South Africa

Hydrogen Epoch of Reionization Array
Low frequency radio telescope in South Africa

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National park around the Square Kilometre Array radio astronomy facility in the Northern Cape