Merritt David, Ekers R D
Department of Physics and Astronomy, Rutgers University, New Brunswick, NJ, 08903, USA.
Science. 2002 Aug 23;297(5585):1310-3. doi: 10.1126/science.1074688. Epub 2002 Aug 1.
Binary supermassive black holes are produced by galactic mergers as the black holes from the two galaxies fall to the center of the merged system and form a bound pair. The two black holes will eventually coalesce in an enormous burst of gravitational radiation. Here we show that the orientation of a black hole's spin axis would change dramatically even in a minor merger, leading to a sudden flip in the direction of any associated jet. We identify the winged or X-type radio sources with galaxies in which this has occurred. The inferred coalescence rate is similar to the overall galaxy merger rate, implying that of the order of one merger event per year could be detected by gravitational wave interferometers.
双超大质量黑洞是星系合并产生的，来自两个星系的黑洞落入合并系统的中心并形成束缚对。这两个黑洞最终将在一场巨大的引力辐射爆发中合并。我们在此表明，即使在小规模合并中，黑洞自旋轴的方向也会发生显著变化，导致任何相关喷流方向突然翻转。我们将这种情况发生的星系与有翼或X型射电源联系起来。推断出的合并率与整体星系合并率相似，这意味着引力波干涉仪每年可能检测到大约一次合并事件。
