Why did not the huge black hole in the center of the Milky Way swallow us?



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Why did not the huge black hole in the center of the Milky Way swallow us?

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MARK GARLICK / LIBRARY PHOTOS OF SCIENCE

Photo of the expression of a black hole

Most galaxies have huge black holes in their center, including the Milky Way galaxy, which contains a magnetic field at its center with a mbadive black hole.

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These mbadive black holes in many galaxies are often very active, which means that many substances fall into them, emitting high energy radiation during this "feeding" process.

NASA scientists believe that the reason is that there is a strong magnetic field in the center of the Milky Way, powerful enough to prevent turbulent gas movements.

"If the magnetic field directs the gas to the same black hole, it is active, because it swallows a lot of gas, but if the magnetic field directs the gas for it to flow into orbit around of the black hole, Calm because it swallows no gas that can eventually form new stars. "

NASA scientists have used a new tool, called a high-resolution portable digital camera (HAWC +), to photograph this magnetic field for the first time.

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These magnetic fields are invisible forces and can not be photographed directly. However, the HAWC + instrument can detect infrared light emitted by celestial dust particles. These grains are aligned vertically with magnetic fields.

With these results, scientists can draw the shape of the invisible magnetic field, etc., and help determine the power of this fundamental nature.

"The spiral shape of the magnetic field puts the gas in orbit around the black hole, which could explain why the black hole in our galaxy is quiet while the black hole is silent," said Darren Dowle, a scientist at Jet Propulsion Laboratory. NASA and principal investigator of the HAWC + instrument. Some are active. "

Source: mirror

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