The Cosmic Flows project : voyage to the Great Attractor - LUTH

COSFLO team, major results in 2012
• Publication of analysis of cosmicflows-1 catalog (observational data) :
Production of 4D dynamic maps of the dark matter in the Local Universe up to 80 Mpc (z=0.01).
Localisation of the Great Attractor region and of the remaining tidal field of 90km/s wrt CMB dipole.
in collaboration with Hawaii Univ., USA and Special Observatory, Russia
• Publication of a new code (IceCore) to build constrained initial conditions from peculiar velocities.
in collaboration with Hebrew Univ, Israel and Potsdam Univ., Germany
• Preparation of the second generation of catalog of peculiar velocities cosmicflows-2, publication of the
recalibration of the Tully-Fisher relation using more than 200 SNIa, Cepheids and 13 galaxy clusters.
in collaboration with Hawaii Univ.
• Publication of a new accurate Hubble constant (up to z=1) derived from I band ground photometry
and space near-infrared measurements : H0 = 75.9 ± 3.8 km.s−1Mpc−1 140
in collaboration with Carnegie Institute (Hubble key project) and Univ. Maryland, USA
• Start of the science work on Euclid space mission :
Definition of the interface between NISP instrument simulator OU-SIM and the
cosmological numerical simulations CSWG.
Preparing the production of the first simulated images for NISP.
in collaboration with CPPM Marseille and Durham Univ., UK
SGY [Mpc/h]
160
120
100
80
60
40
20
0
GA
COMA
LSC
30
60
Great attractor
0 20 40 60 80 100 120 140 160
SGX [Mpc/h]
PP
log(δ+1)
2.5
2
1.5
1
0.5
0
-0.5