Interacting dark energy: possible explanation for 21-cm absorption at cosmic dawn

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 who...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2018-09, Vol.78 (9), p.1-5, Article 746
Main Authors: Costa, André A., Landim, Ricardo C. G., Wang, Bin, Abdalla, Elcio
Format: Article
Language:English
Subjects:
Analysis
Astronomy
Astrophysics and Cosmology
Brightness temperature
Dark energy
Elementary Particles
Hadrons
Heavy Ions
Letter
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Quantum Field Theories
Quantum Field Theory
String Theory
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Summary: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.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-018-6237-7