Constraining the properties of dark energy

  title={Constraining the properties of dark energy},
  author={Dragan Huterer and Michael S. Turner},
The presence of dark energy in the Universe is inferred directly from the accelerated expansion of the Universe, and indirectly, from measurements of cosmic microwave background (CMB) anisotropy. Dark energy contributes about 2/3 of the critical density, is very smoothly distributed, and has large negative pressure. Its nature is very much unknown. Most of its discernible consequences follow from its effect on evolution of the expansion rate of the Universe, which in turn affects the growth of… 

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Astron. J

  • Astron. J
  • 1998

Astrophys. J. Lett

  • Astrophys. J. Lett
  • 1999

Astrophys. J. Lett

  • Astrophys. J. Lett
  • 2000

Astrophys. J

  • Astrophys. J
  • 1999

Astrophys. J

  • Astrophys. J
  • 1997

Astrophys. J

  • Astrophys. J
  • 1974