Multiply your gravity rule by a cosine having a spatial period of one-half the outer radius of the cluster and I suppose you'll end up with a core and a ring. I don't think the simulation is adequate to go beyond that point. At the moment I'm supposing spiral arm pairs form from a ring via the effects of core symmetry decay. Of course everyone else has a completely different hypothesis on such things.
What kind of numerical method do you use for this n-body simulation? What about dark matter? Although the video is interesting, it seems more like a "cartoon physics" example rather than a realistic modelling of the formation of a spiral galaxy.
I agree, it seems as if there is a paired set of invisible sources of new mass on opposite sides of the spinning disk if there is any real simulation going on in this.
Multiply your gravity rule by a cosine having a spatial period of one-half the outer radius of the cluster and I suppose you'll end up with a core and a ring. I don't think the simulation is adequate to go beyond that point. At the moment I'm supposing spiral arm pairs form from a ring via the effects of core symmetry decay. Of course everyone else has a completely different hypothesis on such things.
CACBCCCU 3 years ago
What kind of numerical method do you use for this n-body simulation? What about dark matter? Although the video is interesting, it seems more like a "cartoon physics" example rather than a realistic modelling of the formation of a spiral galaxy.
videosfodidos 4 years ago
I agree, it seems as if there is a paired set of invisible sources of new mass on opposite sides of the spinning disk if there is any real simulation going on in this.
CACBCCCU 2 years ago