Dark Matter Map Reveals New Information on Stellar Evolution

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Astronomers have now created new maps that show large amounts of dark matter in the Universe, while in other areas it is entirely absent. This notion has baffled scientists for decades. The researchers who created the map also observed the locations of normal matter to add to the map to show stellar clusters. The normal entities to which they looked are massive clusters of galaxies. Their research shows that the two factors are linked. Clusters of galaxies lie relatively close to the location of dark matter. Thus, causing scientists to believe that counter equivalent to what scientists can see reveals new information of stellar evolution.

The new map, produced from the Dark Energy Survey (DES), is in agreement with current theories regarding the enigmatic phenomenon. This suggests that the gravitational pull of dark matter would force normal entities towards it, bring the “dark Universe” and the “light Universe” together. The Universe has around five times the amount of dark matter than normal matter. The massive gravitational force which created the formation of galaxies is dependent upon all that is influenced by unseen entity.

The influence of dark matter on stellar bodies is currently debated among astronomers, especially in the evolution of normal matter. These novel maps show additional evidence that although these two counter types of matter are primarily different, dark matter has a very strong force on normal entities, influencing the cosmological distribution of stellar bodies throughout the Universe. Chihway Change, lead researcher on the study, stated the team measured the way in which dark matter takes over different types of galaxies, and how they evolve over time. “We are eager to use the new data coming in to make much stricter tests of theoretical models,” he said.

The fundamental goal of the DES is to understand the phenomenon which is causing the Universe to expand and to reveal new information on stellar evolution. Dark energy and dark matter, the counter equivalents of normal energy and matter are two distinct entities. Though, scientists who are working on the DES stated the way to observe and learn more about dark energy requires seeing how it interacts with observable structures in the Universe. In the cosmos, scientists state the structures regard to the total distribution of dark matter and normal matter.

Dark matter has remained unseen to scientists because it does not reflect, radiate, or block visible light. Though, the immense gravitational force of dark energy gives them a way in which to “see” it. The presence of such influences the motions and trajectory of normal matter, such as galaxies clusters.

Using the Dark Energy Camera, scientists created the maps by observing another phenomenon of dark matter characteristic known as gravitational lensing. Gravitational lensing is the warping of space by gravity. For example, if a galaxy is located behind a entity of dark matter, the light is perturbed and changed. The warping of the light by something which scientists cannot see is what they use to locate dark matter. Therefore, the researchers believe that their new map of the enigmatic phenomenon may reveal new information about how the Universe and the stellar bodies therein may have evolved.

By Alex Lemieux


Apex Tribune


Zee News

Photo by Adam Evans – Flickr License