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For the first time, astronomers observed clusters of gas in orbit around the giant black hole in the heart of the Milky Way galaxy.
Scientists believe that a supermassive black hole called Sagittarius A * is hiding in the center of the Milky Way. Recent observations from this area show that clusters of gas gravitate into orbit at about 30% of the speed of light on a circular trajectory, just outside the black hole event horizon, according to a statement from the US. European Southern Observatory.
Using the GRAVITY instrument installed on the ESO's very large telescope, astronomers detected an eruption of infrared radiation from the accretionary disk surrounding Sagittarius A *. Their findings not only confirm the presence of the supermassive black hole, but also suggest that the material turns very close to the black hole event horizon. In addition, the latest observations offer the most detailed view to date of equipment in orbit so close to the black hole, according to the statement. [The Strangest Black Holes of the Universe]
"It's amazing to see materials gravitating around a huge black hole at 30% of the speed of light," said Oliver Pfuhl, a researcher and scientist at the Max Planck Institute for Extraterrestrial Physics. "The great sensitivity of GRAVITY has allowed us to observe the process of accretion in real time with unprecedented details."
The black holes of the monsters are hiding in the center of most galaxies in the universe. The gravitational forces of these cosmic giants inhale the surrounding gas and dust. Most of the materials contained in the accretion disk surrounding the Milky Way's black hole orbit at a safe distance. However, anything that is too close is likely to be overtaken by the horizon of events, where he can never escape the gravity of the black hole. According to the statement, eruptions come from materials in the innermost and closest orbit that can be detected before the point of no return is exceeded.
Astronomers recorded luminous infrared emissions when they observed a star called S2 crossing the extreme gravitational field near Sagittarius A * in May 2018.
During the close flyby of the star, the team saw the high infrared emissions emitted by highly energetic electrons located very close to the black hole of the galaxy. Specifically, they discovered that the emissions came from magnetic interactions in the very hot gas in orbit very close to Sagittarius A *. Astronomers have observed emissions with the help of GRAVITY, as well as the SINFONI instrument, which is also part of the VLT.
"We are watching S2 closely and, of course, we are still watching Sagittarius A *," Pfuhl said in his statement. "In our observations, we were lucky enough to notice three bright bursts around the black hole – it was a lucky coincidence!"
Their findings were published Oct. 18 in the journal Astronomy & Astrophysics.
Follow Samantha Mathewson @ Sam_Ashley13. follow us @Spacedotcom, Facebook and Google+. Original article on Space.com.
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