PMID: 15245272Jul 13, 2004Paper

Measuring the small-scale power spectrum of cosmic density fluctuations through 21 cm tomography prior to the epoch of structure formation

Physical Review Letters
Abraham Loeb, Matias Zaldarriaga

Abstract

The thermal evolution of the cosmic gas decoupled from that of the cosmic microwave background (CMB) at a redshift z approximately 200. Afterwards and before the first stars had formed, the cosmic neutral hydrogen absorbed the CMB flux at its resonant 21 cm spin-flip transition. We calculate the evolution of the spin temperature for this transition and the resulting anisotropies that are imprinted on the CMB sky due to linear density fluctuations during this epoch. These anisotropies, at an observed wavelength of 10.56[(1+z)/50] m, contain an amount of information that is orders of magnitude larger than any other cosmological probe.

References

Sep 16, 2000·Physical Review Letters·M Kamionkowski, A R Liddle

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Citations

Oct 10, 2006·Physical Review Letters·Kris Sigurdson, Steven R Furlanetto
May 16, 2007·Physical Review Letters·Rishi Khatri, Benjamin D Wandelt
Mar 21, 2008·Physical Review Letters·Rishi Khatri, Benjamin D Wandelt
Sep 26, 2012·Physical Review Letters·Laura BookFabian Schmidt
Jul 15, 2017·Physical Review Letters·Xingang ChenZhong-Zhi Xianyu
Jul 26, 2012·Reports on Progress in Physics·Jonathan R Pritchard, Abraham Loeb
Jun 18, 2017·Physical Review Letters·Kiyoshi Wesley MasuiNeil Turok
Nov 6, 2018·Physical Review Letters·Xingang ChenSpyros Sypsas
Sep 26, 2012·Physical Review Letters·Donghui Jeong, Marc Kamionkowski
Feb 7, 2007·Physical Review Letters·Asantha Cooray
Aug 19, 2006·Science·Rennan Barkana

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