Physics – General Physics
Scientific paper
2006-07-24
Physics
General Physics
8 pages with no figures
Scientific paper
We start from the author's metric for a rotating and accelerating Universe and we calculate the force acting on a particle in it. This force consists of two parts: one is derived from a potential, and the other describes a Coriolis force coming from the overall rotation of the Universe. We then write down the equations of motion, and we solve them analytically in the Newtonian approximation. The result has to describe in particular a spiral arm. It consists of two parts. The first one disappears in the case of slow rotation of the Universe, as it must be the case for our real Universe. The second one, with appropriate adjustment of the constants involved, gives right a logarithmic helix, as it has been found empirically to be the case for our Galaxy (in particular).
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