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

  title={The observable signature of late heating of the Universe during cosmic reionization},
  author={Anastasia Fialkov and Rennan Barkana and Eli Visbal},
Models and simulations of the epoch of reionization predict that spectra of the 21-centimetre transition of atomic hydrogen will show a clear fluctuation peak, at a redshift and scale, respectively, that mark the central stage of reionization and the characteristic size of ionized bubbles. This is based on the assumption that the cosmic gas was heated by stellar remnants—particularly X-ray binaries—to temperatures well above the cosmic microwave background at that time (about 30 kelvin). Here… 

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