Hyper Suprime-Cam survey maps dark matter in the universe

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According to (This article and its images were originally posted on Latest Science News — ScienceDaily September 26, 2018 at 12:16PM.)

Today, an international group of researchers, including Carnegie Mellon University’s Rachel Mandelbaum, released the deepest wide field map of the three-dimensional distribution of matter in the universe ever made and increased the precision of constraints for dark energy with the Hyper Suprime-Cam survey (HSC).
The present-day universe is a pretty lumpy place. As the universe has expanded over the last 14 billion years or so, galaxies and dark matter have been increasingly drawn together by gravity, creating a clumpy landscape with large aggregates of matter separated by voids where there is little or no matter.

The gravity that pulls matter together also impacts how we observe astronomical objects. As light travels from distant galaxies towards Earth, the gravitational pull of the other matter in its path, including dark matter, bends the light. As a result, the images of galaxies that telescopes see are slightly distorted, a phenomenon called weak gravitation lensing. Within those distortions is a great amount of information that researchers can mine to better understand the distribution of matter in the universe, and it provides clues to the nature of dark energy.

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This article and its images were originally posted on [Latest Science News — ScienceDaily] September 26, 2018 at 12:16PM. Credit to the original author and Latest Science News — ScienceDaily | ESIST.T>G>S Recommended Articles Of The Day.

 

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