An upper limit on the stochastic gravitational-wave background of cosmological origin

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doi:10.48550/arxiv.0910.5772

An upper limit on the stochastic gravitational-wave background of cosmological origin

DOI DOI HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE HANDLE PDF Web Site PubMed ほか15件をすべて表示一部だけ表示被引用文献28件オープンアクセス

書誌事項

公開日: 2009-08

権利情報

http://www.springer.com/tdm

DOI

10.1038/nature08278
10.48550/arxiv.0910.5772

公開者: Springer Science and Business Media LLC

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説明

A stochastic background of gravitational waves is expected to arise from a superposition of a large number of unresolved gravitational-wave sources of astrophysical and cosmological origin. It is expected to carry unique signatures from the earliest epochs in the evolution of the universe, inaccessible to the standard astrophysical observations. Direct measurements of the amplitude of this background therefore are of fundamental importance for understanding the evolution of the universe when it was younger than one minute. Here we report direct limits on the amplitude of the stochastic gravitational-wave background using the data from a two-year science run of the Laser Interferometer Gravitational-wave Observatory (LIGO). Our result constrains the energy density of the stochastic gravitational-wave background normalized by the critical energy density of the universe, in the frequency band around 100 Hz, to be less than 6.9 x 10^{-6} at 95% confidence. The data rule out models of early universe evolution with relatively large equation-of-state parameter, as well as cosmic (super)string models with relatively small string tension that are favoured in some string theory models. This search for the stochastic background improves upon the indirect limits from the Big Bang Nucleosynthesis and cosmic microwave background at 100 Hz.

収録刊行物

Nature

Nature 460 (7258), 990-994, 2009-08

Springer Science and Business Media LLC

被引用文献 (28)*注記

詳細情報詳細情報について

CRID

1362544420060448640
DOI

10.1038/nature08278

10.48550/arxiv.0910.5772
ISSN

14764687

00280836
HANDLE

11588/512028

1871.1/4b3d0824-ab3f-48b5-ab36-7e14a048507b

11858/00-001M-0000-0013-4D74-E

11858/00-001M-0000-0013-4D73-0

11572/83379

11572/163221

11576/2302639

11386/2501081

2108/30938

11573/227253

11581/221749

11568/196144

11391/888127

1885/38366

2440/51212
PubMed

19693079
Web Site

http://www.nature.com/articles/nature08278.pdf

http://www.nature.com/articles/nature08278
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An upper limit on the stochastic gravitational-wave background of cosmological origin

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収録刊行物

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