Trio of physicists create computer simulation of dark matter using an empirical function

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Tangled web. A simulation of gravitationally interacting dark matter particles in the Universe shows the stringy nature of dark matter, peppered with voids, over the largest distance scales. Credit: N. Hamaus/Paris Inst. of Astrophys. & M. Warren/Los Alamos National Lab, via Physics Three physicists affiliated with several universities in the U.S. and France have built a computer simulation of the bubble-like voids that exist in dark matter which offers better density information. In their paper published in the journalPhysical Review Letters, the researchers describe how their simulation showed that such voids have a wide range of sizes and ages with highest densities occurring in boundary areas. Scientists still don’t know much about dark matter—it’s believed to make up most of the known universe (as evidenced by gravitational studies) and doesn’t interact much with parts of the universe we can see, which of course, includes light. To gain a better understanding of it, researchers have been creating computer simulations based on what is observable. Such simulations in the past have shown that dark matter is not uniform, in fact, if we could see it, it would look a lot like the inside of bones—lots of air pockets (voids) with boundary material between them. The simulations

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