Phase-space mixing of dark halos in merger event

Details Phase-space mixing of dark halos in merger event Phase-space mixing of dark halos in merger event

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sf2a.conf..297p&link_type=abstract

SF2A-2006: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: D. Barret, F. Casoli, G.

Astronomy and Astrophysics

Astrophysics

Scientific paper

Cosmological N-body simulations were performed to study the evolution of the mixing effects of dark matter halos after a merger event. Particles of the main halo and of the captured satellite fuse in velocity space in a common Gaussian in a few dynamical timescales. Streams can be seen in phase-space, quite similar to caustics generated in secondary infall models of halo formation and could be ``finger-prints" to be searched by the forthcoming GAIA experiment.

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