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Binary Black Hole in 3C 75 http://antwrp.gsfc.nasa.gov/apod/ap100314.html Explanation: What's happening in the middle of this massive galaxy? There, two bright sources at the center of this composite x-ray (blue)/radio (pink) image are thought to be co-orbiting supermassive black holes powering the giant radio source 3C 75. Surrounded by multimillion degree x-ray emitting gas, and blasting out jets of relativistic particles the supermassive black holes are separated by 25,000 light-years. At the cores of two merging galaxies in the Abell 400 galaxy cluster they are some 300 million light-years away. Astronomers conclude that these two supermassive black holes are bound together by gravity in a binary system in part because the jets' consistent swept back appearance is most likely due to their common motion as they speed through the hot cluster gas at 1200 kilometers per second. Such spectacular cosmic mergers are thought to be common in crowded galaxy cluster environments in the distant universe. In their final stages the mergers are expected to be intense sources of gravitational waves. 3C75 - Central Galaxy em Abell 400 http://images.nrao.edu/object/index.php?id=30 Merging Galaxies Create a Binary Quasar http://www.youtube.com/watch?v=4tmsK5kAyNc Descrição: Astronomers have found the first clear evidence of a binary quasar within a pair of actively merging galaxies. Quasars are the extremely bright centers of galaxies surrounding super-massive black holes, and binary quasars are pairs of quasars bound together by gravity. Binary quasars, like other quasars, are thought to be the product of galaxy mergers. Until now, however, binary quasars have not been seen in galaxies that are unambiguously in the act of merging. But images of a new binary quasar from the Carnegie Institutions Magellan telescope in Chile show two distinct galaxies with tails produced by tidal forces from their mutual gravitational attraction. Cont... -- Beijins Fa ---------------------------------------------------------------- "Eu não minto, apenas faço ficção com a boca." - Homer Simpson ----------------------------------------------------------------
