Wednesday, April 8, 2009
NEW QUASAR-California-Santa Cruz astronomers rockzz
Quasars are enormously bright cores of very distant galaxies thought to contain “super-massive” black holes a billion times larger than our sun. They are seen only in the centers of very distant galaxies that formed long ago .University of California-Santa Cruz astronomers are the first to discover the onset of a huge flow of gas from a quasar, or the super-bright core of an extremely remote young galaxy still being formed. The gas was expelled from the quasar and its enormous black hole sometime in the space of four years around 10 billion years ago – an extremely brief and ancient blip noticed only by a sharp-eyed undergraduate and the unlikely convergence of two separate observational efforts.