2018/03/31 by André A. Costa, Andre A. Costa, Ricardo C. G. Landim +3 · 55 citations
Physics and Astronomy · #Absorption (acoustics) #Astronomy and Astrophysical Research #Brightness #COSMIC cancer database #Cosmology and Gravitation Theories #Dark energy #Energy (signal processing) #Galaxies: Formation, Evolution, Phenomena #Order (exchange) #Variety (cybernetics) #astro-ph.CO #gr-qc
paper · pdf · doi:10.1140/epjc/s10052-018-6237-7
published in The European Physical Journal C 78(9) (Springer Science+Business Media) · 5 pages, 2 figures. Discussion improved, new references, conclusions unchanged. Accepted in EPJC
openalex created_date 2018/03/29 · openalex publication_date 2018/09/01 · arxiv created 2018/09/11 · arxiv updated 2018/09/21 · openalex updated_date 2026/08/06
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.