IMBHIntermediate-Mass Black Hole
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The IMBH is the second-largest black hole discovered in the Milky Way next to Sagittarius A*, which is 400 million times the size of our sun.
"One possible scenario is IMBHs - which are formed by the runaway coalescence of stars in young compact star clusters - merge at the centre of a galaxy to form a supermassive black hole," said Prof Oka.
IMBHs are a newer theory; and while many have been proposed, none have been accepted yet.
IMBH candidates are considered to be the "seeds" that form and grow massive black holes.
It is thought that IMBHs are formed within such huge star clusters.
An IMBH at the cluster's center acts like a cosmic 'spoon' and stirs the pot, causing those stars to slingshot to higher speeds and greater distances.
Combined with computer simulations of stellar motions, this points toward the existence of an IMBH of roughly 2,200 solar masses within the cluster.
The IMBH course, a value- oriented programme, is mandatory for all DU students under the four- year undergraduate programme.
There are several other cosmic objects that on first glance also appear to be intermediate-mass black holes (IMBHs), but that's because they are accreting material at unnaturally high rates, boosting their luminosity.
Among ULXs, the sources M82 X-1 and ESO 243-49 HLX-1 are the two best IMBH candidates; evidence suggesting that M82 X-1 is a 400 solar-mass black hole appeared in the September 4th Nature.
A stellar-mass black hole could easily masquerade as an IMBH by beaming most of its radiation toward Earth, which could fool astronomers into overestimating its luminosity.
Tidal-shredding events can also provide a smoking gun for intermediate-mass black holes (IMBHs) 1,000 to 100,000 times the mass of the Sun.