To indirectly detect dark matter, the scientists constructed a "mass map" using weak gravitational lensing shear measurements made by the DES. Gravitational lensing refers to the bending of light by the mass surrounding galaxies.
Invisiblesource (The Worlds Only Hope Book 1) - Kindle edition by John Julian Eckert. Download it once and read it on your Kindle device, PC, phones or tablets . See Tweets about #invisiblesource on Twitter. See what people are saying and join the conversation.
This bending creates a distortion, or shear, of the galaxy's shape, which scientists can then measure to determine the density and matter distribution of the lens. The researchers then compared the mass map with a new optical galaxy distribution map, also made from DES data.
The information allowed the scientists to look for patterns in the distribution of galaxies and dark matter. The relationship between the galaxy distribution and the mass map is close to that predicted by theoretical models based on cosmological simulations that include an accelerated expansion of the universe. DES data are projected to cover more than 36 times the area of this initial map. Scientists are hopeful that this set of data will lead to new clues about the nature of dark energy.
Cookie Preferences. Buyer Protection.
Monica, along with WNI co-founder Derek Road traffic noise modifies behaviour of a keystone species Graeme Shannon , Lisa M. Page of 1. Susan Cocker Hopkins. Thread Tools. Invisible Tents for your source. Find More Posts by oninightma.
Save big on our app! Cart 0.
Wish List. Sign Out.
Sign in Sign in with.