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Missing dark matter located

Inter-galactic space is filled with dark matter

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Kavli Institute for the Physics and Mathematics of the Universe
2012/02/10

Researchers at the University of Tokyo’s Institute for the Physics and Mathematics of the Universe (IPMU) and Nagoya University used large-scale computer simulations and recent observational data of gravitational lensing to reveal how dark matter is distributed around galaxies.

dark matter distribution

A computer simulation shows dark matter is distributed in a clumpy but organized manner

The new research concludes that galaxies have no definite “edges.” Instead galaxies have long outskirts of dark matter that extend to nearby galaxies and the inter-galactic space is not empty but filled with dark matter.

The research article has been published in the February 10th issue of The Astrophysical Journal.

Press release

Paper

Shogo Masaki (Department of Physics Nagoya University, JSPS Fellow), Masataka Fukugita (Institute for Cosmic Ray Research, University of Tokyo, Institute for the Physics and Mathematics of the Universe, University of Tokyo), Naoki Yoshida (Institute for the Physics and Mathematics of the Universe, University of Tokyo).,
“Matter Distribution around Galaxies”,
The Astrophysical Journal 746, 38. doi :10.1088/0004-637X/746/1/38.
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Institute for the Physics and Mathematics of the Universe

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