Future weak lensing constraints in a dark coupled universe - INSPIRE

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Future weak lensing constraints in a dark coupled universe

Francesco De Bernardis
(
- UC, Irvine
)
,
Matteo Martinelli
(
- Rome U. and
- INFN, Rome
)
,
Alessandro Melchiorri
(
- Rome U. and
- INFN, Rome
)
,
Olga Mena
(
- Valencia U., IFIC
)
,
Asantha Cooray
(
- UC, Irvine
)

Apr, 2011

8 pages

Published in:

Phys.Rev.D 84 (2011) 023504

e-Print:

1104.0652 [astro-ph.CO]

DOI:

10.1103/PhysRevD.84.023504

View in:

ADS Abstract Service

reference search38 citations

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Abstract: (arXiv)

Coupled cosmologies can predict values for the cosmological parameters at low redshifts which may differ substantially from the parameters values within non-interacting cosmologies. Therefore, low redshift probes, as the growth of structure and the dark matter distribution via galaxy and weak lensing surveys constitute a unique tool to constrain interacting dark sector models. We focus here on weak lensing forecasts from future Euclid and LSST-like surveys combined with the ongoing Planck cosmic microwave background experiment. We find that these future data could constrain the dimensionless coupling to be smaller than a few

\times 10^{-2}

. The coupling parameter

\xi

is strongly degenerate with the cold dark matter energy density

\Omega_{c}h^2

and the Hubble constant

H_0

.These degeneracies may cause important biases in the cosmological parameter values if in the universe there exists an interaction among the dark matter and dark energy sectors.

95.36.+x
98.70.Vc
95.35.+d

References(57)

Figures(8)

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(
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)
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)
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(
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)

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Laura Lopez Honorez
(
- Madrid, IFT and
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)
,
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(
- Barcelona U. and
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)
,
Olga Mena
(
- Valencia U. and
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)
,
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(
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)
,
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(
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)

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Matteo Martinelli
(
- Rome U. and
- INFN, Rome
)
,
Laura Lopez Honorez
(
- Madrid, IFT
)
,
Alessandro Melchiorri
(
- Rome U. and
- INFN, Rome
)
,
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(
- Valencia U., IFIC
)

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(
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)
,
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(
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)
,
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(
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)

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(
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(
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)
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(
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(
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)
,
Olivier Boulade
(
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)
,
Yannick Mellier
(
- Paris, Inst. Astrophys.
)
,
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(
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)
,
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(
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•
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