Signature of the interaction between dark energy and dark matter in galaxy clusters


Autoria(s): Abdalla, Elcio; Abramo, Luis Raul Weber; Sodre Junior, Laerte; WANG, Bin
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2009

Resumo

We investigate the influence of ail interaction between dark energy and dark matter upon the dynamics of galaxy clusters. We obtain file general Layser-Irvine equation in the presence of interactions, and find how, in that case. the virial theorem stands corrected. Using optical, X-ray and weak lensing data from 33 relaxed galaxy clusters, we put constraints on the strength of the coupling between the dark sectors. Available data Suggests that this coupling is small but positive, indicating that dark energy might be decaying into dark matter. Systematic effects between the several mass estimates, however, should be better known, before definitive conclusions oil the magnitude and significance of this coupling could be established. (C) 2009 Published by Elsevier B.V.

FAPESP

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

CNPq of Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Natural Science Foundation of China (NSFC)

NNSF Natural Science Foundation of China

Shanghai Education Commission

Shanghai Education Commission

Shanghai Science and Technology Commission

Shanghai Science and Technology Commission

Identificador

PHYSICS LETTERS B, v.673, n.2, p.107-110, 2009

0370-2693

http://producao.usp.br/handle/BDPI/29280

10.1016/j.physletb.2009.02.008

http://dx.doi.org/10.1016/j.physletb.2009.02.008

Idioma(s)

eng

Publicador

ELSEVIER SCIENCE BV

Relação

Physics Letters B

Direitos

restrictedAccess

Copyright ELSEVIER SCIENCE BV

Palavras-Chave #HIGH-REDSHIFT SUPERNOVAE #HUBBLE-SPACE-TELESCOPE #COSMOLOGICAL CONSTANT #OBSERVATIONAL CONSTRAINTS #ABELL CLUSTERS #EVOLUTION #UNIVERSE #MODEL #STATE #MASS #Physics, Multidisciplinary
Tipo

article

original article

publishedVersion