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

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


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  <dc:creator>Perlmutter, Saul</dc:creator>
  <dc:creator>Turner, Michael S.</dc:creator>
  <dc:creator>White, Martin</dc:creator>
  <dc:date>1999-07-01</dc:date>
  <dc: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 ${$Ω${}}_{X}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}{$ρ${}}_{X}/{$ρ${}}_{\mathrm{crit}}$𝟄${}(0.6,0.7)$ and ${w\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}p}_{X}/{$ρ${}}_{X}&lt;$-${}0.6$ ( $95%$ 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.</dc:description>
  <dc:identifier>https://zenodo.org/record/1233929</dc:identifier>
  <dc:identifier>10.1103/physrevlett.83.670</dc:identifier>
  <dc:identifier>oai:zenodo.org:1233929</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://creativecommons.org/publicdomain/zero/1.0/legalcode</dc:rights>
  <dc:title>Constraining Dark Energy with Type Ia Supernovae and Large-Scale Structure</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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