First Constraints on Helium <sup>+</sup>He<sup>3</sup> Evolution in z=3–4 Using the 8.67GHz Hyperfine Transition

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First Constraints on Helium <sup>+</sup>He<sup>3</sup> Evolution in z=3–4 Using the 8.67GHz Hyperfine Transition

We present the first constraints on the cross-correlation power spectrum of the He II (+He3) signal strength using the redshifted 8.67 GHz hyperfine transition between z = 2.9 and 4.1 and with interferometric data obtained from the public archive of the Australia Telescope Compact Array (ATCA). 210...

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Bibliographic Details
Main Authors:	Trott, Cathryn, Wayth, Randall
Format:	Journal Article
Published:	2024
Online Access:	http://purl.org/au-research/grants/arc/FT180100321 http://hdl.handle.net/20.500.11937/96294

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