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

Autor(es)

Costa, Andre A. ^[1] ; Landim, Ricardo C. G. ^{[1, 2]} ; Wang, Bin ^[3] ; Abdalla, Elcio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, CP 66318, BR-05315970 Sao Paulo, SP - Brazil

^[2] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 - USA

^[3] Yangzhou Univ, Ctr Gravitat & Cosmol, Yangzhou 225009, Jiangsu - Peoples R China

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL C; v. 78, n. 9 SEP 18 2018.
• Citações Web of Science: 15

Resumo

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. (AU)

• Processo FAPESP: 13/26496-2 - Testando modelos de interação entre matéria e energia escuras
• Beneficiário: André Alencar da Costa
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado