Two different telescopes used together: astronomers showed what came of it

Using two types of telescopes, researchers obtained impressive images of the clusters

galaxies. Scientists have also obtained more information about the enormous amount of energy that is released around supermassive black holes in objects of this type.

Astronomers have long known that supermassiveblack holes at the centers of galaxies produce huge jets. These jets fly out of the black hole and heat the gas in space. When the jets collide with regions of gas, they form huge “lobes” tens of thousands of light years in diameter. It takes hundreds of millions of years for them to disappear. In theory, these regions of space give astronomers information about what happened in the cluster.

The problem is that the information is difficult to extract.An international team of astronomers solved the problem by combining measurements from the LOFAR radio telescope with data from the Chandra X-ray satellite. Scientists used Hubble data as the background for the new image.

This combination gives a better idea of ​​howwhat is happening, scientists explain. It was previously not possible because there were no radio images available of sufficient quality to match the Chandra X-ray images. Since LOFAR antenna stations are now located throughout Europe, the resolution has become quite high.

Composite image of the center of a galaxy clusterPerseus. Red is the radio emission received by LOFAR. Blue - X-rays from the Chandra telescope. White is hydrogen in the WIYN telescope's H-alpha map. And the background is the night sky in the optical light of the Hubble telescope. Credit: LOFAR/Chandra/WIYN/Hubble/Frits Sweijen

To demonstrate their technique, theyphotographed the Perseus cluster. This is a group of more than a thousand galaxies located approximately 240 million light years away in the direction of the northern constellation Perseus.

Now, astronomers continue to create composite images of other clusters. Using the underlying data, they hope to better understand the interactions between galaxies and their environments in the early Universe.

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