A Massive Black Hole in the Center of the Milky Way


What is unknown is how these supermassive black holes form.

There is very good evidence that supermassive black holes (SMBHs) dominate the centres of many galaxies.

(Phys.org)-A team of researchers with Keio University in Japan has found evidence of a mid-sized black hole near the center of the Milky Way galaxy. Supernovae create black holes up to several times the mass of the Sun, and there's a prospect of slightly larger black holes being formed by a non-explosive mechanism.

This represents something of a first for astronomers, since the vast majority of black holes discovered to date have been either small or massive.

That accolade is reserved for Sagittarius A, which is anchored at the very centre of the galaxy and has a mass of 400 million suns.

A vast black hole has been discovered close to the heart of the Milky Way, veiled in an enormous cloud of swirling molecular gas.

According to Time and Newsweek, those gases (which moved at different speeds and included molecules such as carbon monoxide and hydrogen cyanide) appeared to be moved by powerful gravitational forces.

If confirmed, the phenomena will measure in as an intermediate-mass black hole; a potentially enlightening link between the small black holes, which are born when stars end their lives, and supermassive black holes, existing at the hearts of galaxies.

Astronomers have long chased evidence of mid-sized black holes - black holes larger than the ones formed from a single star, but still much smaller than supermassive black holes.

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Black holes are hard to find because they do not emit any light. If these are plentiful, as astronomers theorize, they could merge at the center of a galaxy to form a supermassive black hole. They said numerical simulations suggest that CO-0.40-0.22 is one of the most promising candidates for an intermediate-mass black hole.

It was found hiding in a cloud of molecular gas by Japanese astronomers using the Alma (Atacama Large Millimeter/submillimeter Array) 16,400 feet above sea level in the Andes in northern Chile.

Researchers will continue to study this IMBH in order to understand its nature in a detailed manner.

We know there's a supermassive black hole at the center of our galaxy, and now we have evidence for another one. These characteristics could be explained by a "gravitational kick" that is caused by "invisible compact object with a mass of about 105 solar masses". Their findings could help explain exactly how supermassive black holes actually form, The Guardian noted.

The concept of Black holes was firstly predicted by Albert Einstein. According to scientists' calculations, the Milky Way is home to about 100m of these smaller black holes, though only about 60 have been spotted.

But Oko and his team posit that CO-0.40-0.22 used to be the nucleus of a dwarf galaxy that was slowly drawn into the Milky Way.

"Further detection of such compact high-velocity features in various environments may increase the number of non-luminous black hole candidate and thereby increase targets to search for evidential proof of general relativity", Oka concludes.

'This would make a considerable contribution to the progress of modern physics'.