Marco Baldi
Marco Baldi
Marco Baldi
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The first hydrodynamical high-resolution N-body simulations for a weak<br />
DE-CDM CONSTANT interaction: [<strong>Baldi</strong> et al., MNRAS 2010]<br />
! ! / / ! crit<br />
10 5<br />
10 5<br />
10 4<br />
10 4<br />
10 3<br />
10 3<br />
10 2<br />
10 2<br />
10 1<br />
10 1<br />
Tuesday, July 6, 2010<br />
Resuts (IV): halo density profiles<br />
Halo Density profiles for CDM and baryons for Group nr. 0<br />
N=2x512 3<br />
L=80Mpc/h<br />
Hydro<br />
"CDM<br />
RP1<br />
RP2<br />
RP5<br />
M200("CDM) = 2.82510e+14 h -1 M200("CDM) = 2.82510e+14 h M O•<br />
-1 M O•<br />
10 100<br />
R (h<br />
1000<br />
-1 10 100<br />
R (h kpc)<br />
1000<br />
-1 kpc)<br />
<strong>Marco</strong> <strong>Baldi</strong> - MGADS, Strasbourg 16 VI 2010<br />
DENSITY PROFILES<br />
The combination of the friction<br />
term and of the mass variation of<br />
(coupled) CDM particles affects<br />
the virial equiibrium of collapsed<br />
objects.<br />
The two effects induce a global<br />
increase of the total energy of the<br />
systems which slightly expand. This<br />
produces shallower density<br />
profiles in the inner regions of<br />
CDM halos: RINGS A BELL?
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