Disk formation and the origin of clumpy galaxies at high redshift (2009)
Agertz, Oscar, Teyssier, Romain, Moore, Ben
Observations of high redshift galaxies have revealed a multitude of large clumpy rapidly star-forming galaxies. Their formation scenario and their link to present day spirals is still unknown. In...
Large scale galactic turbulence: can self-gravity drive the observed HI velocity dispersions? (2008)
Agertz, Oscar, Lake, George, Teyssier, Romain, Moore, Ben, Mayer, Lucio, Romeo, Alessandro B.
Observations of turbulent velocity dispersions in the HI component of galactic disks show a characteristic floor in galaxies with low star formation rates and within individual galaxies the...
Romeo, Alessandro B., Agertz, Oscar, Moore, Ben, Stadel, Joachim
Melott has made pioneering studies of the effects of particle discreteness in N-body simulations, a fundamental point that needs careful thought and analysis since all such simulations suffer from...
Discreteness Effects in Lambda Cold Dark Matter Simulations: A Wavelet-Statistical View (2008)
Romeo, Alessandro B., Agertz, Oscar, Moore, Ben, Stadel, Joachim
The effects of particle discreteness in N-body simulations of Lambda Cold Dark Matter (LambdaCDM) are still an intensively debated issue. In this paper we explore such effects, taking into account...
Fundamental differences between SPH and grid methods (2007)
Agertz, Oscar, Moore, Ben, Stadel, Joachim, Potter, Doug, Miniati, Francesco, Read, Justin, ...
Fundamental differences between SPH and grid methods (2006)
Agertz, Oscar, Moore, Ben, Stadel, Joachim, Potter, Doug, Miniati, Francesco, Read, Justin, ...
We have carried out a hydrodynamical code comparison study of interacting multiphase fluids. The two commonly used techniques of grid and smoothed particle hydrodynamics (SPH) show striking...
Hansen, Steen H., Agertz, Oscar, Joyce, Michael, Stadel, Joachim, Moore, Ben, Potter, Doug
N-body simulations sample their initial conditions on an initial particle distribution, which for cosmological simulations is usually a glass or grid, whilst a Poisson distribution is used for galaxy...