X-ray 'echoes' map a supermassive black hole's environs
Thursday, May 31, 2012 - 16:41
in Astronomy & Space
(Phys.org) -- An international team of astronomers using data from the European Space Agency's (ESA) XMM-Newton satellite has identified a long-sought X-ray "echo" that promises a new way to probe supersized black holes in distant galaxies.