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Adaptive Techniques for Clustered N-Body Cosmological Simulations
Harshitha Menon, Lukasz Wesolowski, Gengbin Zheng +4
ChaNGa is an N-body cosmology simulation application implemented using Charm++. In this paper, we present the parallel design of ChaNGa and address many challenges arising due to t…
Growth and activity of black holes in galaxy mergers with varying mass ratios
Pedro R. Capelo, Marta Volonteri, Massimo Dotti +3
We study supermassive black holes (BHs) in merging galaxies, using a suite of hydrodynamical simulations with very high spatial (~10 pc) and temporal (~1 Myr) resolution, where we…
The Milky Way Tomography with SDSS. V. Mapping the Dark Matter Halo
Sarah R. Loebman, Zeljko Ivezic, Thomas R. Quinn +6
We present robust constraints from the Sloan Digital Sky Survey (SDSS) on the shape and distribution of the dark matter halo within the Milky Way (MW). Using the number density dis…
Faint dwarfs as a test of DM models: WDM vs. CDM
Fabio Governato, Daniel Weisz, Andrew Pontzen +12
We use high resolution HydroN-Body cosmological simulations to compare the assembly and evolution of a small field dwarf (stellar mass ~ 10 M, total mass 10$^{10}…
Kinematic Evolution of Simulated Star-Forming Galaxies
Susan A. Kassin, Alyson Brooks, Fabio Governato +2
Recent observations have shown that star-forming galaxies like our own Milky Way evolve kinematically into ordered thin disks over the last ~8 billion years since z=1.2, undergoing…
Dark Matter Heating and Early Core Formation in Dwarf Galaxies
Piero Madau, Sijing Shen, Fabio Governato
We present more results from a fully cosmological LCDM simulation of a group of isolated dwarf galaxies that has been shown to reproduce the observed stellar mass and cold gas cont…
Effects of Inclination on Measuring Velocity Dispersion and Implications for Black Holes
Jillian Bellovary, Kelly Holley-Bockelmann, Kayhan Gültekin +5
The relation of central black hole mass and stellar spheroid velocity dispersion (the M- relation) is one of the best-known and tightest correlations linking black holes and the…
Simulating disc galaxy bulges that are consistent with observed scaling relations
C. R. Christensen, A. M. Brooks, D. B. Fisher +5
We present a detailed comparison between the photometric properties of the bulges of two simulated galaxies and those of a uniform sample of observed galaxies. This analysis shows…
Cold dark matter heats up
Andrew Pontzen, Fabio Governato
One of the principal discoveries in modern cosmology is that standard model particles (including baryons, leptons and photons) together comprise only 5% of the mass-energy budget o…