aug 032012
The Awakening of a Distant Galaxy's Dormant Black Hole

  Last year, astronomers discovered a quiescent supermassive black hole in a distant galaxy that erupted after shredding and consuming a passing star. Now researchers have identified a distinctive X-ray signal observed in the days following the outburst that comes from matter on the verge of falling into the black hole.  This illustration highlights the [continue reading]