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Here’s Why Milky Way’s Supermassive Black Hole Didn’t Gobble

November 5, 2014 By Jason Leathers 2 Comments

Why-supermassive-black-hole-didn't-gooble

A celestial object known as ‘G2’, believed to be a cloud of hydrogen gas was discovered by researchers in 2003. However, earlier this year, it had a close encounter with a supermassive black hole at the center of the Milky Way.

The astronomers were quite excited about this phenomenon because this would eventually enable them to see the huge gas cloud being gobbled up by the black hole called Sagittarius A*.

In contrast to what the astronomers expected, however, G2 was not smashed during its encounter with the black hole, and a recent study reveals an authentic explanation why.

Andrea Ghez from the department of physics and astronomy at the University of California, Los Angeles (UCLA), and colleagues said that, “the reason G2 proceeded intact after its encounter with the black hole is that it is not actually a cloud of hydrogen gas at all.” The study is published on 3rd November in the Astrophysical Journal Letters.

The researchers claimed that if G2 had been a hydrogen gas cloud as initially assumed, it could have been torn apart by Sagittarius A* that would have produced celestial fireworks.

Ghez said, “G2 survived and continued happily on its orbit; a simple gas cloud would not have done that. G2 was basically unaffected by the black hole. There were no fireworks.”

The researchers conducted a detailed study of G2 with the help of the world’s largest optical and infrared telescopes at the W.M. Keck Observatory in Hawaii and suggested that G2 is probably a pair of stars.

The binary star system had been orbiting the black hole together and then merged to become an extremely large star enveloped in the dust and gas with its movement being influenced by the powerful gravitational field of the black hole, Ghez and colleagues claimed.

Similarly, the researchers noted that G2 seemed to be one of a rising class of stars close to the black hole, which were created due to the powerful gravity of the black hole causing the binary stars to merge into one.

“G2 is a dusty red object linked with gas that reveals tidal interactions as it’s next to its closest approach to the Galaxy’s central black hole. We propose that G2 is a binary star merger product and will ultimately appear similar to the B-stars that are tightly clustered around the black hole (the so-called S-star cluster),” researchers wrote.

Filed Under: Tech & Science Tagged With: Astrophysical Journal Letters, G2, Hawaii, Los Angeles, milky way, Sagittarius A, supermassive black hole, UCLA, University of California, W.M. Keck Observatory

Mystery of Massive Milky Way Objects Solved – Scientists Claimed

November 5, 2014 By Brian Galloway 1 Comment

G2- object of Milky Way

Astronomers finally solved the mystery of celestial body located at the center of the Milky Way Galaxy.

Recently, researchers of University of California discovered that the entity is a union of two stars. The object is entirely wrapped with the dust and gases.

Scientist revealed some really significant information about these stars and named it as G2. They informed that it is merely a pair of stars that had been around Sagittarius A. Sagittarius A is a really sharp and astronomical radio source.

Now the two stars have merged and created an incredibly huge new star which is covered by gas and dust.

Researchers have been trying to find out the reality of the particular object since several years. Earlier, they supposed that the object is nothing but a cloud of hydrogen gas.

Andrea Ghez, the professor of UCLA informed that G2 survived the massive destruction of black hole.   Generally, people think that black hole is an empty space. However, the black holes are the objects of intense density which has a really powerful gravitational attraction. It has such an extreme gravitational appeal from which even light cannot run away.

Therefore, the affect of black hole is pretty evident on the stars of the Milky Way. G2 is also one of the neighbor stars of black hole which is formed through the strong gravitational force of black hole.

The study is printed in Monday’s edition of The Astrophysical Journal. The entire report is based on the Keck telescope observations from Hawaii.

Filed Under: Tech & Science Tagged With: Astronomical Radio source, G2, Hydrogen Cloud Gas, Keck telescope, Milky Way Galaxy, Sagittarius A, The Astrophysical Journal, University of California

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