Gravitational redshift of galaxies in clusters as predicted by general relativity

R. Wojtak; Steen Harle Hansen; Jens Hjorth

doi:10.1038/nature10445

Gravitational redshift of galaxies in clusters as predicted by general relativity

R. Wojtak, Steen Harle Hansen, Jens Hjorth

74 Citationer (Scopus)

Abstract

The theoretical framework of cosmology is mainly defined by gravity, of which general relativity is the current model. Recent tests of general relativity within the Lambda Cold Dark Matter (Î CDM) model have found a concordance between predictions and the observations of the growth rate and clustering of the cosmic web. General relativity has not hitherto been tested on cosmological scales independently of the assumptions of the Î CDM model. Here we report an observation of the gravitational redshift of light coming from galaxies in clusters at the 99 per cent confidence level, based on archival data. Our measurement agrees with the predictions of general relativity and its modification created to explain cosmic acceleration without the need for dark energy (the f(R) theory), but is inconsistent with alternative models designed to avoid the presence of dark matter.

Originalsprog	Engelsk
Tidsskrift	Nature
Vol/bind	477
Udgave nummer	7366
Sider (fra-til)	567-569
ISSN	0028-0836
DOI	https://doi.org/10.1038/nature10445
Status	Udgivet - 29 sep. 2011

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10.1038/nature10445

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title = "Gravitational redshift of galaxies in clusters as predicted by general relativity",

abstract = "The theoretical framework of cosmology is mainly defined by gravity, of which general relativity is the current model. Recent tests of general relativity within the Lambda Cold Dark Matter ({\^I} CDM) model have found a concordance between predictions and the observations of the growth rate and clustering of the cosmic web. General relativity has not hitherto been tested on cosmological scales independently of the assumptions of the {\^I} CDM model. Here we report an observation of the gravitational redshift of light coming from galaxies in clusters at the 99 per cent confidence level, based on archival data. Our measurement agrees with the predictions of general relativity and its modification created to explain cosmic acceleration without the need for dark energy (the f(R) theory), but is inconsistent with alternative models designed to avoid the presence of dark matter.",

author = "R. Wojtak and Hansen, {Steen Harle} and Jens Hjorth",

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T1 - Gravitational redshift of galaxies in clusters as predicted by general relativity

AU - Wojtak, R.

AU - Hansen, Steen Harle

AU - Hjorth, Jens

PY - 2011/9/29

Y1 - 2011/9/29

N2 - The theoretical framework of cosmology is mainly defined by gravity, of which general relativity is the current model. Recent tests of general relativity within the Lambda Cold Dark Matter (Î CDM) model have found a concordance between predictions and the observations of the growth rate and clustering of the cosmic web. General relativity has not hitherto been tested on cosmological scales independently of the assumptions of the Î CDM model. Here we report an observation of the gravitational redshift of light coming from galaxies in clusters at the 99 per cent confidence level, based on archival data. Our measurement agrees with the predictions of general relativity and its modification created to explain cosmic acceleration without the need for dark energy (the f(R) theory), but is inconsistent with alternative models designed to avoid the presence of dark matter.

AB - The theoretical framework of cosmology is mainly defined by gravity, of which general relativity is the current model. Recent tests of general relativity within the Lambda Cold Dark Matter (Î CDM) model have found a concordance between predictions and the observations of the growth rate and clustering of the cosmic web. General relativity has not hitherto been tested on cosmological scales independently of the assumptions of the Î CDM model. Here we report an observation of the gravitational redshift of light coming from galaxies in clusters at the 99 per cent confidence level, based on archival data. Our measurement agrees with the predictions of general relativity and its modification created to explain cosmic acceleration without the need for dark energy (the f(R) theory), but is inconsistent with alternative models designed to avoid the presence of dark matter.

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DO - 10.1038/nature10445

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EP - 569

JO - Nature

JF - Nature

IS - 7366

ER -

Gravitational redshift of galaxies in clusters as predicted by general relativity

Abstract

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