Journal article Open Access

# Constraining Dark Energy with Type Ia Supernovae and Large-Scale Structure

Perlmutter, Saul; Turner, Michael S.; White, Martin

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{
"description": "Measurements of the distances to type Ia supernovae have produced strong evidence that the expansion of the Universe is accelerating, implying the existence of a nearly uniform component of dark energy with negative pressure. We show that constraints to this mysterious component based upon large-scale structure nicely complement the SN Ia data, and that together they require ${$\u03a9${}}_{X}\\phantom{\\rule{0ex}{0ex}}=\\phantom{\\rule{0ex}{0ex}}{$\u03c1${}}_{X}/{$\u03c1${}}_{\\mathrm{crit}}$\ud835\udfc4${}(0.6,0.7)$ and ${w\\phantom{\\rule{0ex}{0ex}}=\\phantom{\\rule{0ex}{0ex}}p}_{X}/{$\u03c1${}}_{X}&lt;$-${}0.6$ ( $95%$ C.L.), for the favored flat Universe. Other cosmological data support this conclusion. The simplest explanation, a cosmological constant, is consistent with this, while some of the other possibilities are not.",
"creator": [
{
"@type": "Person",
"name": "Perlmutter, Saul"
},
{
"@type": "Person",
"name": "Turner, Michael S."
},
{
"@id": "https://orcid.org/0000-0001-9912-5070",
"@type": "Person",
"name": "White, Martin"
}
],
"headline": "Constraining Dark Energy with Type Ia Supernovae and Large-Scale Structure",
"datePublished": "1999-07-01",
"url": "https://zenodo.org/record/1233929",
"@context": "https://schema.org/",
"identifier": "https://doi.org/10.1103/physrevlett.83.670",
"@id": "https://doi.org/10.1103/physrevlett.83.670",
"@type": "ScholarlyArticle",
"name": "Constraining Dark Energy with Type Ia Supernovae and Large-Scale Structure"
}
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