Prof.
Donghai Zhao
(Shanghai Astronomical Obervatory)
27/07/2010 12:00
Structure Formation & N-body simulations
Talk
Dark matter halos constitute cosmic structures, host galaxy formation, bend light from faraway galaxies and so are very important objects to study. In the past few years, a large amount of observations have constrained cosmological parameters and the initial density fluctuation spectrum to a pretty high accuracy. However, cosmological parameters change with redshift and the power index of the...
Dr
Luis Acedo
(Instituto de Matemática Multidisciplinar, Universidad Politécnica de Valencia)
27/07/2010 12:20
Structure Formation & N-body simulations
Talk
In 1983 Milgrom proposed an alternative explanation for the anomalous rotation of galaxies based upon a modification of Newtonian dynamics for small accelerations (MOND theory) [1] . A careful analysis of the rotation curves revealed that the effect of the supposed dark matter seems to activate only when the orbital acceleration is smaller than 2x10^{-8} cm s^{-2}.
MOND theory still...