(Hydrogen Intensity and Real-time Analysis Experiment)
(radio telescope array 21-cm surveying)
HIRAX (for Hydrogen Intensity and Real-time Analysis Experiment)
is a radio telescope array under construction in South Africa
to survey the redshifted 21-cm line from distant
galaxy clusters, to map large scale structure and to detect baryon acoustic oscillations.
It is to consist of 1024 6-meter dishes, receiving
400 MHz to 800 MHz. Operation of a subset is planned for
as early as 2019 and completion of the array in the next
couple of years. It is similar to Canadian Hydrogen Intensity Mapping Experiment, but offers
independent data with different systematics.
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