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Monday, May 29, 2017

Astronomers Spotted a New Black Hole

Image shows the disappearance of Star forming Black Hole
      Astronomers have watched a birth of new black hole. These observations made through Hubble and Spitzer Space Telescopes. The spotted star became a black hole instead of going to supernova state. Most of the star form black hole after a stage of supernova, but this star was strange and faded directly to a black hole. This was discovered by a group of astronomers from Ohio state university and the Ohio Eminent Scholar in Observational Cosmology.

As many as 30 percent of such stars, it seems, may quietly collapse into black holes and no supernova required. Kochanek explained that they don't see supernova from most massive stars. This star named NGC-6946 is 23 times larger than Sun located in a Spiral Galaxy which is 22 million light years away. And it was nick named "Fireworks Galaxy" because supernova frequently happens there. Observation starting from 2009 of this star named N6946-BH1, began to brighten weakly. By 2015, it appeared to have winked out of existence.

Star N6946-BH1 transformation to a Black Hole
After a clear reference, the researchers concluded that the stars must have become a black hole. N6946-BH1 is only likely failed supernova that they found in first seven years of survey. During that period, six-normal supernovas  have occurred within the Galaxies. They have been monitoring and suggesting that 10 to 30 percent of massive stars die as failed supernova.

Credit : ESA/NASA, Kochanek and Ohio State University, United States.


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