Why we need to see the dark matter to understand the dark energy

Details Why we need to see the dark matter to understand the dark energy Why we need to see the dark matter to understand the dark energy

2007-10-30

arxiv.org/abs/0710.5712v1

J.Phys.Conf.Ser.110:062014,2008

Astronomy and Astrophysics

Astrophysics

4 pages, to be published in the Journal of Physics: Conference Series as a contribution to the 2007 Europhysics Conference on

Scientific paper

10.1088/1742-6596/110/6/062014

The cosmological concordance model contains two separate constituents which interact only gravitationally with themselves and everything else, the dark matter and the dark energy. In the standard dark energy models, the dark matter makes up some 20% of the total energy budget today, while the dark energy is responsible for about 75%. Here we show that these numbers are only robust for specific dark energy models and that in general we cannot measure the abundance of the dark constituents separately without making strong assumptions.

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