Abstract: |
MOND is a paradigm of dynamics that contends to supersede Newtonian dynamics and general relativity. It aims to account for the mass discrepancies in the Universe without invoking such entities as ``dark matter” and perhaps ``dark energy”. The basic premises of MOND are: departure from standard dynamics at low accelerations, and space-time scale invariance in the low-acceleration limit. From these follow a number of salient predictions, such as asymptotic flatness of rotation curves, the baryonic Tully-Fisher relation, a constant asymptotic light-bending angle, and, more generally, a strong correlation between mass discrepancy and acceleration. I will discuss such predicted laws, as well as more involved MOND predictions, such as full rotation curves of disc galaxies, elliptical galaxies, dwarf spheroidal satellites, tidal dwarfs, and galaxy groups and clusters. I will briefly touch on MOND theory, and point out possible, intriguing connections of MOND with cosmology. |