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...
A wavelet add-on code for new-generation N-body simulations and data de-noising (JOFILUREN) (2004)
Romeo, Alessandro B., Horellou, Cathy, Bergh, Joeran
Wavelets are a new and powerful mathematical tool, whose most celebrated applications are data compression and de-noising. In Paper I (Romeo, Horellou & Bergh 2003, astro-ph/0302343), we have shown...
N-body simulations with two-orders-of-magnitude higher performance using wavelets (2003)
Romeo, Alessandro B., Horellou, Cathy, Bergh, Joeran
Noise is a problem of major concern for N-body simulations of structure formation in the early Universe, of galaxies and plasmas. Here for the first time we use wavelets to remove noise from N-body...
Astrophysical Dynamics 1999/2000: Merging Research and Education (2000)
The workshop `Astrophysical Dynamics 1999/2000' followed a homonymous advanced research course, and both activities were organized by me. In this opening paper of the proceedings book, I describe...
MY LIFE AS TUTOR: Reflections on Two Recent Experiences (1999)
In this final report, I briefly reflect on two parallel teaching experiences as tutor. Besides, I briefly view such experiences in interaction with my research work, private life and new teaching...
Modelling gravity is a fundamental problem that must be tackled in N-body simulations of stellar systems, and satisfactory solutions require a deep understanding of the dynamical effects of...
Dynamical Effects of Softening in N-Body Simulations of Disc Galaxies (1997)
Two questions that naturally arise in N-body simulations of stellar systems are: (1) How can we compare experiments that employ different types of softened gravity? (2) Given a particular type of...