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Density profiles and substructure of dark matter halos: converging results at ultra-high numerical resolution
Sebastiano Ghigna, Ben Moore, Fabio Governato +3
Can N-body simulations reliably determine the structural properties of dark matter halos? Focussing on a Virgo-sized galaxy cluster, we increase the resolution of current ``high re…
Dark Matter Substructure in Galactic Halos
Ben Moore, Sebastiano Ghigna, Fabio Governato +4
We use numerical simulations to examine the substructure within galactic and cluster mass halos that form within a hierarchical universe. Clusters are easily reproduced with a stee…
Inhomogeneous Reionization Regulated by Radiative and Stellar Feedbacks
B. Ciardi, A. Ferrara, F. Governato +1
We study the inhomogeneous reionization in a critical density CDM universe due to stellar sources, including Population III objects. The spatial distribution of the sources is obta…
Dynamical friction and the evolution of satellites in virialized halos: the theory of linear response
Monica Colpi, Lucio Mayer, Fabio Governato
The evolution of a small satellite inside a more massive truncated isothermal spherical halo is studied using both the Theory of Linear Response for dynamical friction and N-Body s…
The morphological evolution of galaxy satellites
Lucio Mayer, Fabio Governato, Monica Colpi +3
We study the evolution of galaxy satellites with high resolution N-body simulations. Satellites are modeled as replicas of typical low and high surface brightness galaxies (LSBs an…
Cold collapse and the core catastrophe
Ben Moore, Tom Quinn, Fabio Governato +2
We show that a universe dominated by cold dark matter fails to reproduce the rotation curves of dark matter dominated galaxies, one of the key problems that it was designed to reso…