The 21-cm Line as a Probe of Reionization

  title={The 21-cm Line as a Probe of Reionization},
  author={Steven R. Furlanetto},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  • S. Furlanetto
  • Published 3 November 2015
  • Physics, Geology
  • arXiv: Cosmology and Nongalactic Astrophysics
One of the most exciting probes of the early phases of structure formation and reionization is the spin-flip line of neutral hydrogen, with a rest wavelength of 21 cm. This chapter introduces the physics of this transition and the astrophysical parameters upon which it depends, including discussions of the radiation fields that permeate the intergalactic medium that fix the brightness of this transition. We describe the critical points in the evolution of the 21-cm background and focus on the… 
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  • G. Bernardi
  • Physics
    Proceedings of the International Astronomical Union
  • 2017
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