scholarly journals Dark Energy-Dark Matter Interaction from the Abell Cluster A586 and violation of the Equivalence Principle

2007 ◽  
Author(s):  
Morgan Le Delliou ◽  
Orfeu Bertolami ◽  
Francisco Gil Pedro ◽  
Arttu Rajantie ◽  
Carlo Contaldi ◽  
...  
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Equivalence Principle ◽  
Matter Interaction ◽  
Abell Cluster

scholarly journals Dark Energy-Dark Matter Interaction from the Abell Cluster A586

2008 ◽  
Vol 30 ◽  
pp. 161-167 ◽  
Author(s):  
O. Bertolami ◽  
F. Gil Pedro ◽  
M. Le Delliou
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Matter Interaction ◽  
Abell Cluster

scholarly journals Non-virialized clusters for detection of dark energy–dark matter interaction

2015 ◽  
Vol 453 (1) ◽  
pp. 2-13 ◽  
Author(s):  
M. Le Delliou ◽  
R. J. F. Marcondes ◽  
G. B. Lima Neto ◽  
E. Abdalla
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Matter Interaction

scholarly journals THE ROLE OF DARK MATTER INTERACTION IN GALAXY CLUSTERS

2012 ◽  
Vol 27 (26) ◽  
pp. 1250144 ◽  
Author(s):  
C. E. PELLICER ◽  
ELISA G. M. FERREIRA ◽  
DANIEL C. GUARIENTO ◽  
ANDRÉ A. COSTA ◽  
LEILA L. GRAEF ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Dark Matter ◽  
Dark Energy ◽  
Galaxy Clusters ◽  
Interaction Parameters ◽  
Galactic Dynamics ◽  
Matter Interaction ◽  
Algorithm Search ◽  
Baryon Distributions

We consider a toy model to analyze the consequences of dark matter interaction with a dark energy background on the overall rotation of galaxy clusters and the misalignment between their dark matter and baryon distributions when compared to ΛCDM predictions. The interaction parameters are found via a genetic algorithm search. The results obtained suggest that interaction is a basic phenomenon whose effects are detectable even in simple models of galactic dynamics.

scholarly journals LONG RANGE GRAVITY TESTS AND THE PIONEER ANOMALY

2007 ◽  
Vol 16 (12a) ◽  
pp. 2091-2105 ◽  
Author(s):  
SERGE REYNAUD ◽  
MARC-THIERRY JAEKEL
Keyword(s):  
General Relativity ◽  
Dark Matter ◽  
Dark Energy ◽  
Solar System ◽  
Equivalence Principle ◽  
Experimental Tests ◽  
Pioneer Anomaly ◽  
New Space ◽  
Tests Of Gravity ◽  
Good Agreement

Experimental tests of gravity performed in the solar system show a good agreement with general relativity. The latter is, however, challenged by the Pioneer anomaly, which might be pointing at some modification of gravity law at ranges of the order of the size of the solar system. As this question could be related to the puzzles of "dark matter" or "dark energy," it is important to test it with care. There exist metric extensions of general relativity which preserve the well-verified equivalence principle while possibly changing the metric solution in the solar system. Such extensions have the capability to preserve compatibility with existing gravity tests while opening free space for the Pioneer anomaly. They constitute arguments for new mission designs and new space technologies as well as for having a new look at data of already-performed experiments.

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