G2 cloud escaped from Giant Black Holes

Astronomy Science ~ For several years, astronomers were puzzled by the strange object in the center of our Milky Way is believed to be a cl...

Astronomy Science ~ For several years, astronomers were puzzled by the strange object in the center of our Milky Way is believed to be a cloud of hydrogen gas (called G2) are on their way to a big black hole in our galaxy.

At the time of its closest approach to the black hole, astronomers were surprised to see that the G2 cloud is not destroyed after its closest approach to the supermassive black hole.

Now they may know the cause why this object is not destroyed. G2 may not be a cloud of gas, but he is actually a binary star pair were merged into one to create a massive star surrounded by a cloud of gas and dust.

Astronomers have discovered that if G2 has been a cloud of hydrogen, it could have been ripped apart by the black hole, and that the resulting fireworks sky will dramatically change the state of a black hole.

G2 simulation of objects around a black hole of the Milky Way
"G2 survived and kept happy in its orbit, a simple gas cloud will not do it," said Andrea Ghez, professor of physics and astronomy at UCLA university. "G2 is basically not affected by the black hole. No fireworks."

The black hole, which is formed from the collapse of matter, have a high density that nothing can escape from its gravitational pull, not even light. They can not be seen directly, but their influence on nearby stars visible and give signs of its existence, Ghez said.

That's no cloud! Astronomers think they've solved the mystery of G2's black hole survival: https://t.co/vl7HxdiZM0 pic.twitter.com/0H9hmdW3At - Alan Boyle (@ b0yle) 3 November 2014

Ghez, who studied thousands of stars in the neighborhood of supermassive black holes, said that the G2 seems to be one of the class of stars that appear close to a black hole created by the strong gravity of the black hole binary star pushing merge into one.

When the two stars near the black holes merge into one, the stars rise for more than 1 million years before it settles back down, Ghez said. "This may happen more than we had expected. The stars in the center of the galaxy is very massive and most binary star. There is a possibility of many stars we see today is the end product of the merger of the star.

Ghez and her colleagues also determined that the G2 seems now to be in a bulging stage. His body has made many fascinated astronomers in recent years, especially during the years leading up to his approach to the black hole. "That's one of the astronomical events of the most watched in my career," said Ghez.

Ghez says G2 now experiencing what he described as a "spaghetti-fication" - a common phenomenon near the black hole where large objects become elongated. At the same time, gas in G2 surface being heated by the stars around it, creating a huge cloud of gas and dust that blanketed most massive stars.

The latest findings about the object G2 is made using the Keck telescope and published online on Monday in the Astrophysical Journal.

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AstroNation: G2 cloud escaped from Giant Black Holes
G2 cloud escaped from Giant Black Holes
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