By Tomonori Totani: Assistant Professor(presently Associate Professor) at Department of Astronomy, Kyoto University , April 1, 2005
By a large scale search of the universe, a phenomenon that light flares will increase greatly in only several days has been discovered emanating from the center of a seemingly usual galaxy that exists at a distance of about four billion light years from the earth.
This radiation has come out from a gas disk that rotates around a huge black hole with a mass 100 million times larger than our sun. The gas disk is probably located 1 billion kilometers away from this massive black hole and rotates at a speed close to the speed of light.
This black hole is significantly larger than the black hole that is at the center of our galaxy and the black hole at the centre of our galaxy has a mass 3 million times larger than the mass of our sun.
This is the first time that the intense activity of the visible light region has been discovered from such a black hole.
The thought that there is a large black hole at the core of all galaxies in the universe is becoming the mainstream now, and the result of this discovery mentioned above supports this thought.