Bullet Clusters in the MareNostrum Universe

Details Bullet Clusters in the MareNostrum Universe Bullet Clusters in the MareNostrum Universe

2010-07-22

arxiv.org/abs/1007.3902v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

20 pages, 4 figures. Accepted for publication in ApJ

Scientific paper

We estimate the expected distribution of displacements between the dark matter and gas cores in simulated clusters. We use the MareNostrum Universe, one of the largest non radiative, SPH Lambda CDM cosmological simulations. We find that projected 2-D displacements between dark matter and gas, equal or larger than the observed in the Bullet Cluster, are expected in 1% to 2% of the clusters with masses larger than 10^{14} Msun. The 2-D displacement distribution is roughly the same between redshifts 0

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