Possible interaction between baryons and dark-matter particles revealed by the first stars

Rennan Barkana ()
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Rennan Barkana: Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University

Nature, 2018, vol. 555, issue 7694, 71-74

Abstract: The large absorption of the 21-centimetre transition of hydrogen around redshift 20 is explained by radiation from the first stars, combined with excess cooling of the cosmic gas caused by baryon–dark matter scattering.

Date: 2018
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DOI: 10.1038/nature25791

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