Dwarf galaxy dance: by Nature Video

[RAHMELBASS]

That was nice.

[amarillo275]

Lovely!

[321beth321]

Magnificent! 

[lee155912000]

This is an awesome simulation!

The two people who disliked this video must be dimwits who don't understand the magnitude of this sim.

[kasuha]

I'd definitely like to know the mechanics behind this model. Supernova explosions are driven by electromagnetic interaction (photon pressure) and if dark matter does not interact electromagnetically (i.e. through photons) the only way to drive matter out of center is by gravity - but I fail to see gravitational mechanism that makes such giant hole in dark matter while leaving all normal matter stars in the region untouched.

[astrospiff]

...unbinding from sudden mass loss.

[kasuha]

Majority of mass already there is dark matter. And the supernova is sure not alone in the region, too... so I don't see any _major_ mass loss anywhere.

[PlatypusNose]

...

[PlatypusNose]

wow...

[astrospiff]

Actually, the whole project did take about one million of computer hours to finish. This single simulation alone took about 200.000. It was run on a supercomputer, using up to 1000 processors at the same time.

[LikeAPossum]

That must've taken some monster to compute.

[kotowate]

Why do you think so? ;) Only because it's simulates huge things it doesn't mean that it has to be so complicated.

[LikeAPossum]

It's not about the size of the stuff. It's about the level of detail in space and time. It seems very fine just from the video.

I'm no expert on computing fluid dynamics however and the original article doesn't mention anything about it, so I don't know in the end.

[GraffTips]

now thats pretty epic