Researchers from Penn State University have developed a computer model that describes the interaction of a binary black hole system; where two black holes orbit one another. Previous models have fallen apart because the gravity of the black holes distorts the surrounding space so dramatically, it’s almost impossible to calculate. This unusual situation could generate gravity waves detectable from Earth, which so far have only been theorized by mathematicians.
Astronomers from several US universities have developed a scenario where colliding black holes could be ejected from their galaxy. When two galaxies merge, their central supermassive black holes will orbit one another and eventually collide. When this merge happens, the radiation pressure is so large that it could theoretically knock the black hole out of the centre of the galaxy. Although it should be incredibly rare, it could be possible to spot a black hole in a recently merged galaxy which isn’t at the centre where it normally belongs.
Image credit: ESO A team of astronomers have spotted an otherwise normal star make a close pass with the supermassive black hole that lurks at the centre of our Milky Way Galaxy. At its closest approach, the star was only 17 light-hours away from the black hole (three times the distance of the Sun to […]