Hydrogen was not ionized abruptly

Jonathan Pritchard and Abraham Loeb
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Jonathan Pritchard: Jonathan Pritchard and Abraham Loeb are in the Institute for Theory and Computation, Harvard University, Cambridge, Massachusetts 02138, USA. jpritchard@cfa.harvard.edu; aloeb@cfa.harvard.edu
Abraham Loeb: Jonathan Pritchard and Abraham Loeb are in the Institute for Theory and Computation, Harvard University, Cambridge, Massachusetts 02138, USA. jpritchard@cfa.harvard.edu; aloeb@cfa.harvard.edu

Nature, 2010, vol. 468, issue 7325, 772-773

Abstract: When and how the first stars and galaxies ionized the primordial hydrogen atoms that filled the early Universe is not known. Observations with a single radio antenna are opening a new window on the process. See Letter p.796

Date: 2010
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DOI: 10.1038/468772b

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