dark matter

Simulating galaxies for 5 billion years to spot real dark matter signals

Five billion years.

4 min readUW News
Simulating galaxies for 5 billion years to spot real dark matter signals
Most galaxies are likely surrounded by long filaments of orbiting stars known as stellar streams. In a new study from the University of Washington, astronomers simulated stellar streams — pictured here as multicolored streaks — as they orbited virtual host galaxies to test a leading theory about how dark matter might influence the streams’ shape. The results could help researchers separate true evidence of dark matter from false positives. Credit: Visualization by Arpit Arora and Adrian Price-Whelan. Milky Way image credit: Stefan Payne-Wardenaar.
From UW News

Most of the stars in our Milky Way galaxy sit neatly on a flat plane. But the space around our galaxy is much more chaotic. Rogue bands of stars called “stellar streams” orbit the Milky Way much like planets in our solar system orbit the sun.

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