Etude de bruit de fond induit par les muons dans l'expérience ...

tel-00724955, version 1 - 23 Aug 2012
1
18 The Dark Matter problem
Ω Λ
3
2
1
0
-1
Supernova Cosmology Project
No Big Bang
Clusters
CMB
Supernovae
open
expands forever
recollapses eventually
flat
Knop et al. (2003)
Sper gel et al. (2003)
Allen et al. (2002)
closed
0 1 2 3
Figure 1.12: The normalized matter Ωm versus the energy density ΩΛ for three
independent sets of observations: High-redshift supernovae, galaxy cluster surveys
and cosmic microwave background. These three independent observations converge
near Ωm = 0.25 and ΩΛ = 0.75. The black diagonal with a negative slope indicates
the expectation from a flat cosmos (ΩΛ+Ωm = 1, with a dominant contribution of ΩΛ,
thus ΛCDM model). The small yellow contour in this region indicates how SNAP,
a satellite experiment, is expected to deliver on the sensitivity to this parameters.
Figure from [36].
Ω
M