Constraining the Dark Universe

Rachel Bean; Steen H. Hansen; Alessandro Melchiorri

doi:10.1016/S0920-5632(02)01475-5

Constraining the Dark Universe

Astrophysics 2015-06-24 v2 High Energy Physics - Phenomenology

Authors: Rachel Bean , Steen H. Hansen , Alessandro Melchiorri

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Abstract

We combine complementary datasets to constrain dark energy. Using standard Big Bang Nucleosynthesis and the observed abundances of primordial nuclides to put constraints on $\Omega_Q$ at temperatures near $T \sim 1MeV$ , we find the strong constraint $\Omega_Q({MeV}) < 0.045$ at $2\sigma$ c.l.. Under the assumption of flatness, using results from Cosmic Microwave Background (CMB) anisotropy measurements, high redshift supernovae (SN-Ia) observations and data from local cluster abundances we put a new constraint on the equation of state parameter $w_Q < -0.85$ at 68% c.l..

Keywords

dark energy constraints dark energy dark matter relic abundance

Cite

@article{arxiv.astro-ph/0201127,
  title  = {Constraining the Dark Universe},
  author = {Rachel Bean and Steen H. Hansen and Alessandro Melchiorri},
  journal= {arXiv preprint arXiv:astro-ph/0201127},
  year   = {2015}
}

Comments

5 pages, 3 figures, new reference added. To appear in the proceedings of TAUP 2001 (7th international workshop on Topics in Astroparticle and Underground Physics), Sep 2001, Laboratori Nazionali del Gran Sasso, Assergi, Italy

Constraining the Dark Universe

Abstract

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