PIRSA:07040007 Scientific Series Cosmology

DOI10.48660/07040007

Series: Cosmology and Gravitation

Lewis, A. (2007). Power spectrum of the dark ages. Perimeter Institute. https://pirsa.org/07040007

Lewis, Antony. Power spectrum of the dark ages. Perimeter Institute, Apr. 10, 2007, https://pirsa.org/07040007 

@misc{ pirsa_PIRSA:07040007,
  doi = {10.48660/07040007},
  url = {https://pirsa.org/07040007},
  author = {Lewis, Antony},
  keywords = {Cosmology},
  language = {en},
  title = {Power spectrum of the dark ages},
  publisher = {Perimeter Institute},
  year = {2007},
  month = {apr},
  note = {PIRSA:07040007 see, \url{https://pirsa.org}}
}

Abstract

In the future it may be possible to observe the CMB radiation at very low frequencies. I review the origin of the signal from 21cm absorption by dark-age gas and explain the huge potential for observational cosmology. I summarise recent work on theoretical expectations for the observable power spectrum, including discussion of Hubble-scale perturbations, the effects of perturbed recombination and non-linear evolution.

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