Possibility of precise measurement of the cosmological power spectrum with a dedicated survey of 21 cm emission after reionization

Abraham Loeb; J. Stuart B. Wyithe

doi:10.1103/PhysRevLett.100.161301

Possibility of precise measurement of the cosmological power spectrum with a dedicated survey of 21 cm emission after reionization

Abraham Loeb^*, J. Stuart B. Wyithe

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

162 Citations (SciVal)

Abstract

Measurements of the 21 cm line emission by residual cosmic hydrogen after reionization can be used to trace the power spectrum of density perturbations through a significant fraction of the observable volume of the Universe. We show that a dedicated 21cm observatory could probe a number of independent modes that is 2 orders of magnitude larger than currently available, and enable a cosmic-variance limited detection of the signature of a neutrino mass ∼0.05eV. The evolution of the linear growth factor with redshift could also constrain exotic theories of gravity or dark energy to an unprecedented precision.

Original language	English
Article number	161301
Number of pages	4
Journal	Physical Review Letters
Volume	100
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.100.161301
Publication status	Published - 16 Apr 2008
Externally published	Yes

Access to Document

10.1103/PhysRevLett.100.161301

Cite this

@article{73178c6741434f37a36ca069f05b314e,

title = "Possibility of precise measurement of the cosmological power spectrum with a dedicated survey of 21 cm emission after reionization",

abstract = "Measurements of the 21 cm line emission by residual cosmic hydrogen after reionization can be used to trace the power spectrum of density perturbations through a significant fraction of the observable volume of the Universe. We show that a dedicated 21cm observatory could probe a number of independent modes that is 2 orders of magnitude larger than currently available, and enable a cosmic-variance limited detection of the signature of a neutrino mass ∼0.05eV. The evolution of the linear growth factor with redshift could also constrain exotic theories of gravity or dark energy to an unprecedented precision.",

author = "Abraham Loeb and Wyithe, \{J. Stuart B.\}",

year = "2008",

month = apr,

day = "16",

doi = "10.1103/PhysRevLett.100.161301",

language = "English",

volume = "100",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

}

TY - JOUR

T1 - Possibility of precise measurement of the cosmological power spectrum with a dedicated survey of 21 cm emission after reionization

AU - Loeb, Abraham

AU - Wyithe, J. Stuart B.

PY - 2008/4/16

Y1 - 2008/4/16

N2 - Measurements of the 21 cm line emission by residual cosmic hydrogen after reionization can be used to trace the power spectrum of density perturbations through a significant fraction of the observable volume of the Universe. We show that a dedicated 21cm observatory could probe a number of independent modes that is 2 orders of magnitude larger than currently available, and enable a cosmic-variance limited detection of the signature of a neutrino mass ∼0.05eV. The evolution of the linear growth factor with redshift could also constrain exotic theories of gravity or dark energy to an unprecedented precision.

AB - Measurements of the 21 cm line emission by residual cosmic hydrogen after reionization can be used to trace the power spectrum of density perturbations through a significant fraction of the observable volume of the Universe. We show that a dedicated 21cm observatory could probe a number of independent modes that is 2 orders of magnitude larger than currently available, and enable a cosmic-variance limited detection of the signature of a neutrino mass ∼0.05eV. The evolution of the linear growth factor with redshift could also constrain exotic theories of gravity or dark energy to an unprecedented precision.

UR - https://www.scopus.com/pages/publications/42449129219

U2 - 10.1103/PhysRevLett.100.161301

DO - 10.1103/PhysRevLett.100.161301

M3 - Article

AN - SCOPUS:42449129219

SN - 0031-9007

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 161301

ER -

Possibility of precise measurement of the cosmological power spectrum with a dedicated survey of 21 cm emission after reionization

Abstract

Access to Document

Other files and links

Fingerprint

Cite this