Velocity field in cluster outskirts in LambdaCDM models

Details Velocity field in cluster outskirts in LambdaCDM models Velocity field in cluster outskirts in LambdaCDM models

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ogci.conf..316p&link_type=abstract

Outskirts of Galaxy Clusters: Intense Life in the Suburbs. Edited by Antonaldo Diaferio, IAU Colloquium #195, p.316-318

Computer Science

Scientific paper

We analyse statistically the infall of mass onto clusters in Λ-CDM numerical simulations. Also, we consider numerical simulations which include galaxy formation through semi-analytical models to compare the expected infall of mass and galaxies. We find the most probable values at V ˜ 300-400 km/s and a significant tail of large infall velocities (V > 1000 km/s). The flow onto cluster is more pronounced for high local density regions. Mass and galaxies behave similarly although with a slightly lower amplitude.

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