A Caltech Library Service

Astro 2020 Science White Paper: Fundamental Cosmology in the Dark Ages with 21-cm Line Fluctuations

Furlanetto, Steven R. and Doré, Olivier (2019) Astro 2020 Science White Paper: Fundamental Cosmology in the Dark Ages with 21-cm Line Fluctuations. Astro2020 Science White Paper, . (Unpublished)

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


The Dark Ages are the period between the last scattering of the cosmic microwave background and the appearance of the first luminous sources, spanning approximately 1100 < z < 30. The only known way to measure fluctuations in this era is through the 21-cm line of neutral hydrogen. Such observations have enormous potential for cosmology, because they span a large volume while the fluctuations remain linear even on small scales. Observations of 21-cm fluctuations during this era can therefore constrain fundamental aspects of our Universe, including inflation and any exotic physics of dark matter. While the observational challenges to these low-frequency 21-cm observations are enormous, especially from the terrestrial environment, they represent an important goal for cosmology.

Item Type:Report or Paper (White Paper)
Related URLs:
URLURL TypeDescription Paper
Furlanetto, Steven R.0000-0002-0658-1243
Doré, Olivier0000-0002-5009-7563
Series Name:Astro2020 Science White Paper
Record Number:CaltechAUTHORS:20190925-135139676
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98859
Deposited By: Tony Diaz
Deposited On:25 Sep 2019 21:10
Last Modified:03 Oct 2019 21:45

Repository Staff Only: item control page