A black hole has not yet been found in a massive galaxy

This image of Abell 2261 contains X-ray data from Chandra (pink) showing hot gas pervading the cluster as well as optical data from Hubble and the Subaru Telescope that show galaxies in the cluster and in the background. Astronomers used these telescopes to search galaxy in the center of the image for evidence of a black hole, weighing between 3 and 100 billion times the Sun, that is expected to be there. No sign of this black hole was found, deepening a mystery about what is happening in this system.
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The black hole in the central galaxy of the Abell 2261 galaxy cluster was again under search. Picture CXC / Univ of Michigan / K. Gültekin / Nasa / STScI / NAOJ / Subaru / NSF / NOAO / KPNO

The central galaxy of the distant galaxy cluster Abell 2261 should have a large black hole at its core. However, astronomers still failed to find signs of it.

Almost every galaxy in the universe has a supermassive black hole at its core. A particularly large opening should nest in the central galaxy of the Abell 2216 galaxy cluster, 2.7 billion light-years away from us, because the galaxy itself is at its largest end.

However, astronomers have been in a godparent when no signs of this black hole have been found.

It was not reflected in the data obtained by the Chandra X-ray telescope in 1999–2004. A more comprehensive study now conducted using longer observations made by Chandra in 2018 has also pulled the watershed.

One possibility that scientists are considering is that the black hole would not even be in the center of the galaxy.

If another galaxy has collided with a galaxy and the black holes in these nuclei have merged, it may have resulted in a kick that has sent a black hole to the side of the galaxy’s core.

Although Chandra’s observations show that the hottest gas in the galaxy is not at its center, no X-rays typical of the growing supermassive black hole have been observed in other parts of the galaxy. A black hole usually exposes itself by heating the material it attracts.

According to the researchers, the galaxy either has no supermassive black hole or absorbs matter too slowly to produce a detectable X-ray signal.

Article source: https://www.avaruus.fi/uutiset/tahdet-sumut-ja-galaksit/suojattu-massiivisesta-galaksista-ei-vielakaan-loydetty-mustaa-aukkoa.html and https://www.nasa.gov/mission_pages/chandra/images/on-the-hunt-for-a-missing-giant-black-hole.html

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  1. December 28, 2020

    […] The central galaxy of the distant galaxy cluster Abell 2261 should have a large black hole at its co… […]

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