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Astrophysics > Cosmology and Nongalactic Astrophysics

Title: Interacting Dark Energy: Possible Explanation for 21-cm Absorption at Cosmic Dawn

Abstract: A recent observation points to an excess in the expected 21-cm brightness temperature from cosmic dawn. In this paper, we present an alternative explanation of this phenomenon, an interaction in the dark sector. Interacting dark energy models have been extensively studied recently and there is a whole variety of such in the literature. Here we particularize to a specific model in order to make explicit the effect of an interaction.
Comments: 4 pages, 2 figures
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO); General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:1803.06944 [astro-ph.CO]
  (or arXiv:1803.06944v1 [astro-ph.CO] for this version)

Submission history

From: André Costa [view email]
[v1] Mon, 19 Mar 2018 14:11:09 GMT (193kb)