Astronomers discover new galaxy clusters hiding right in front of our store

For short: Astronomers into MIT have discovered previously mysterious galaxy clusters that were forgotten about by earlier studies. Distinct results, which were recently in print in The Astrophysical Journal, suggest that as many as one percent towards galaxy clusters could be misidentified as a single bright universe.

Clusters of galaxies containing hundreds or even thousands of unique individual galaxies are held down by gravity. As ÜBER imparts , they move through a lot of hot gas referred to as intracluster medium , and give without the X-ray radiation that we is able to see using space-based telescopes.

Regarding radiation creates a “fuzzy halo” around galaxy clusters, which is why they are concidered easier to identify versus an object with a single source of X-rays, like a star or quasar.

As MIT Associate Mentor Michael McDonald discovered in 2012, however , not all clusters adhere to this general mas notoria. The cluster he figured out, dubbed the Phoenix array, contains a black hole which emits X-rays bright amply to drown out the rays from the intracluster medium. In turn, it looked like a single Ray x source and was misclassified for decades.

Armed with this new expectation, the Clusters Hiding appearing in Plain Sight ( CHiPS ) survey came to life. During the truck cover’s six-year run, the record identified three new universe clusters, one of which is basic Phoenix cluster. That’s significant considering astronomers only know just a few Phoenix-style clusters.

McDonald hopes that the CHiPS surveys results will help others, want those working with the eROSITA X-ray instrument, better learn how to search for clusters.

“The people are building out the group searches for this new X-ray telescope need to be aware of this business, ” McDonald said. “If you miss one for every cent of the clusters, there’s a serious limit to how you can understand the universe. ”

Images courtesy Triff

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