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The observable signature of late heating of the Universe during cosmic reionization

Author

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  • Anastasia Fialkov

    (Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
    Ecole Normale Supérieure, CNRS, 24 rue Lhomond, 75005 Paris, France)

  • Rennan Barkana

    (Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel)

  • Eli Visbal

    (Columbia University, 550 West 120th Street, New York, New York 10027, USA
    Jefferson Laboratory of Physics, Harvard University
    Institute for Theory and Computation, Harvard University, 60 Garden Street, Cambridge, Massachusetts 02138, USA)

Abstract

The hard spectra of X-ray binaries make them ineffective at heating primordial gas, which must have resulted in a delayed and spatially uniform heating during the epoch of reionization; this means that the signature of reionization in spectra of the 21-cm transition of atomic hydrogen will produce a more complex signal than has been predicted, including a distinct minimum at less than a millikelvin.

Suggested Citation

  • Anastasia Fialkov & Rennan Barkana & Eli Visbal, 2014. "The observable signature of late heating of the Universe during cosmic reionization," Nature, Nature, vol. 506(7487), pages 197-199, February.
  • Handle: RePEc:nat:nature:v:506:y:2014:i:7487:d:10.1038_nature12999
    DOI: 10.1038/nature12999
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