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Wednesday, November 7, 2012

Milky Way's black hole goes bang powerful flash

For unknown reason, the black hole (BH), located in the center of our Milky Way galaxy, regarding once a day generates an X-ray flash. Such outbreaks last for several hours, and their brightness can in some cases exceed the normal brightness of the black hole, even a hundred times. But in February 2012, astronomers using the X-ray Observatory "Chandra", recorded the most powerful flare ever observed on the central black hole in our galaxy known as Sagittarius A *.

The luminosity of the outbreak, which took place over 26 000 light-years from us, was 150 times higher than the standard luminosity of the black hole in our galaxy.

The authors of the new study, Michael Novak and Frederick C. Baganoff of the Kavli Institute at the Massachusetts Institute of Technology believe that one of the reasons for this behavior could be a black hole approximation of it asteroid black hole ripped apart and swallowed, which was accompanied by the emission of large amounts of energy. Scientists also believe that in fact the flash Sagittarius A * may be more frequent than previously thought, and they reserve time on the telescope "Chandra" for additional observations.

Their work was presented in the journal The Astrophysical Journal.

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