Marco Baldi
Marco Baldi
Marco Baldi
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The first hydrodynamical high-resolution N-body simulations for a weak<br />
DE-CDM VARIABLE interaction: [<strong>Baldi</strong>, arXiv:1005.2188]<br />
Y b<br />
1.00<br />
0.95<br />
0.90<br />
0.85<br />
0.80<br />
0.75<br />
0.70<br />
0.65<br />
Tuesday, July 6, 2010<br />
Results (III): baryon fraction<br />
10 13<br />
Relative baryon fraction<br />
N=2x512 3 , L=80Mpc/h, Hydro<br />
M200 [h -1 M O•<br />
]<br />
10 14<br />
CDM<br />
EXP010a2<br />
EXP015a3<br />
EXP010e2<br />
EXP010e3<br />
EXP015e3<br />
BARYON FRACTION<br />
The different dynamics of<br />
(uncoupled) baryons and<br />
(coupled) CDM leads to a linear<br />
and nonlinear bias between the<br />
two species<br />
As a consequence, the baryon<br />
fraction of large halos is reduced<br />
in proportion to the coupling<br />
strength: RINGS A BELL?<br />
Yb ≡<br />
<strong>Marco</strong> <strong>Baldi</strong> - MGADS, Strasbourg 16 VI 2010<br />
fb<br />
Ωb/ΩM
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