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Dwarf galaxy Mrk 462

Dragon
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Post by Dragon Tue Jan 11, 2022 1:09 am

The discovery of a supermassive black hole in a relatively small galaxy could help astronomers unravel the mystery surrounding how the very biggest black holes grow.

Researchers used NASA's Chandra X-ray Observatory to identify a black hole containing about 200,000 times the mass of the Sun buried in gas and dust in the galaxy Mrk 462.

Mrk 462 contains only several hundred million stars, making it a dwarf galaxy.

By contrast, our Milky Way is home to a few hundred billion stars.

This is one of the first times that a heavily buried, or "obscured," supermassive black hole has been found in a dwarf galaxy.


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Post by Dragon Tue Jan 11, 2022 1:11 am

Dwarf galaxy Mrk 462 Mrk-462-mini-monster-b
Credit: X-ray: NASA/CXC/Dartmouth Coll./J. Parker & R. Hickox; Optical/IR: Pan-STARRS

"This black hole in Mrk 462 is among the smallest of the supermassive, or monster, black holes," said Jack Parker of Dartmouth College in New Hampshire, who led the study with colleague Ryan Hickox, also from Dartmouth.

"Black holes like this are notoriously hard to find."


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Post by Dragon Tue Jan 11, 2022 1:13 am



"Mini" Monster Black Hole Could Hold Clues to Giant's Growth


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