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Galactic 'Burp' Shows Black Holes Can Also Create, Not Just Destroy

Scientists have figured out the indication of a fierce galactic explosion originated by a relatively close gigantic black hole situated about 26 million light years away from Earth. This black hole is present in the center of a small galaxy called NGC 5195. This galaxy is the only in its type located closest to Earth, experiencing such powerful explosions. The astronomers use to refer the black holes as ‘eating’ stars and gas. Seemingly, these black holes can belch after ingesting stars and gas. Eric Schlegel of the University of Texas at San Antonio said that our research is of vital importance because these processes would probably have occurred in the beginning of universe.
Image Credit: Eric Schlegel/University of Texas at San Antonio

It is usual for giant black holes to eject gas outward but it is unusual to have such settled views from such small black hole. The team of researchers found the sign of such violent outburst in the form of X-rays near the center of galaxy NGC 5195 with the help of NASA’s Chandra X-ray Observatory. In the captured image, there are two arcs of X-rays. One of the team members, Christine Jones of the Harvard-Smithsonian Centre for Astrophysics, said, ‘’We consider these X-rays to be the remains of the ejected matter from the huge explosion, into the galaxy. This process might have a substantial effect on the whole scenario of NGC5195’’.

Scientists noticed the existence of comparatively cool hydrogen gas on the far side of the outer arc of X-rays, indicating that the hotter X-rays have expelled the hydrogen gas away from the center of NGC5195.

This process is called ‘feedback’ and in this case, scientists believe that this outer arc has assembled enough stuff to give rise to the emergence of new stars.

Marie Machacek from one of the researchers, said ‘’We think that feedback avoids galaxies from expanding. Moreover it can be responsible for how some stars form. It reveals that black holes not just demolish but can create too’’.

Researchers told that it takes a lot of time to develop the forces to establish such prospects. They evaluated that it would have taken 1 to 3 million years for the inner arc to reach at its present condition and about 3 to 6 million years for the outer arc.
Scientists consider that this explosion was caused by the collision of NGC5195 with the other spiral galaxy NGC5194 also called the Whirlpool. This collision has provided an initiative for the nativity of stars.

Schlegel said that this black hole’s behavior can be the example of incidents that occurred when our universe was too young. So this adds to the importance of this observation. The researchers reported about their discovery to the American Astronomical Society this week.

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