AustralieFrV1, Main, Exploration, bibRecord, 004401

Will nonlinear peculiar velocity and inhomogeneous reionization spoil 21 cm cosmology from the epoch of reionization?

Identifieur interne : 004401 ( Main/Exploration ); précédent : 004400; suivant : 004402

Will nonlinear peculiar velocity and inhomogeneous reionization spoil 21 cm cosmology from the epoch of reionization?

Auteurs : Paul R. Shapiro [États-Unis] ; Yi Mao [France] ; Ilian T. Iliev [Royaume-Uni] ; Garrelt Mellema [Suède] ; Kanan K. Datta [Suède] ; Kyungjin Ahn [Corée du Sud] ; Jun Koda [Australie]

Source :

Physical review letters [ 1079-7114 ] ; 2013.

RBID : pubmed:25167246

Abstract

The 21 cm background from the epoch of reionization is a promising cosmological probe: line-of-sight velocity fluctuations distort redshift, so brightness fluctuations in Fourier space depend upon angle, which linear theory shows can separate cosmological from astrophysical information. Nonlinear fluctuations in ionization, density, and velocity change this, however. The validity and accuracy of the separation scheme are tested here for the first time, by detailed reionization simulations. The scheme works reasonably well early in reionization (≲40% ionized), but not late (≳80% ionized).

DOI: 10.1103/PhysRevLett.110.151301
PubMed: 25167246

Affiliations:

Le document en format XML

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Serveur d'exploration sur les relations entre la France et l'Australie

Will nonlinear peculiar velocity and inhomogeneous reionization spoil 21 cm cosmology from the epoch of reionization?

Will nonlinear peculiar velocity and inhomogeneous reionization spoil 21 cm cosmology from the epoch of reionization?

Source :

Abstract

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