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

Abstract

In this paper, 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.

Authors:
 [1]; ORCiD logo [2];  [3];  [1]
  1. Univ. de Sao Paulo, Sao Paulo (Brazil)
  2. Univ. de Sao Paulo, Sao Paulo (Brazil); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. YangZhou Univ., Yangzhou (China)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1475481
Report Number(s):
SLAC-PUB-17304
Journal ID: ISSN 1434-6044; PII: 6237
Grant/Contract Number:  
AC02-76SF00515; 150254/2017-2; 208206/2017-5; 013/26496-2
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 78; Journal Issue: 9; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Costa, André A., Landim, Ricardo C. G., Wang, Bin, and Abdalla, Elcio. Interacting dark energy: possible explanation for 21-cm absorption at cosmic dawn. United States: N. p., 2018. Web. doi:10.1140/epjc/s10052-018-6237-7.
Costa, André A., Landim, Ricardo C. G., Wang, Bin, & Abdalla, Elcio. Interacting dark energy: possible explanation for 21-cm absorption at cosmic dawn. United States. doi:10.1140/epjc/s10052-018-6237-7.
Costa, André A., Landim, Ricardo C. G., Wang, Bin, and Abdalla, Elcio. Tue . "Interacting dark energy: possible explanation for 21-cm absorption at cosmic dawn". United States. doi:10.1140/epjc/s10052-018-6237-7. https://www.osti.gov/servlets/purl/1475481.
@article{osti_1475481,
title = {Interacting dark energy: possible explanation for 21-cm absorption at cosmic dawn},
author = {Costa, André A. and Landim, Ricardo C. G. and Wang, Bin and Abdalla, Elcio},
abstractNote = {In this paper, 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.},
doi = {10.1140/epjc/s10052-018-6237-7},
journal = {European Physical Journal. C, Particles and Fields},
number = 9,
volume = 78,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
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