Probing dark energy with the Sandage-Loeb test - INSPIRE

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Probing dark energy with the Sandage-Loeb test

Matteo Martinelli
(
- SISSA, Trieste and
- INFN, Trieste
)
,
Stefania Pandolfi
(
- Bohr Inst.
)
,
C.J.A.P. Martins
(
- Porto U., Astron. Dept.
)
,
P.E. Vielzeuf
(
- Porto U., Astron. Dept. and
- Porto U. and
- Toulouse III U.
)

Oct, 2012

6 pages

Published in:

Phys.Rev.D 86 (2012) 123001

e-Print:

1210.7166 [astro-ph.CO]

DOI:

10.1103/PhysRevD.86.123001

View in:

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Abstract: (arXiv)

Future redshift-drift measurements (also known as Sandage-Loeb signal) will be crucial to probe the so called "redshift desert", thus providing a new tool for cosmological studies. In this paper we quantify the ability of a future measurement of the Sandage-Loeb signal by a CODEX-like spectrograph to constrain a phenomenological parametrization of dynamical dark energy, specifically by obtaining constraints on

w_0

and

w_a

. We also demonstrate that if used alongside CMB data, the Sandage-Loeb measurements will be able to break degeneracies between expansion parameters, thus greatly improving cosmological constraints.

Note:

6 pages, 7 figures. New version matching the one accepted by PRD

95.36.+x
98.54.Aj
98.80.Es

References(23)

Figures(9)

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