If black hole is born at the edge of a galaxy, is it eventually pulled into the centre? If so, wouldn't it create a visible distortion as it falls to the massive black hole in the centre? Or does dark matter maintain a balanced galaxy?
There seem to be Black holes existing in the outskirts of galaxies. http://www.nasa.gov/mission_pages/chandra/multimedia/photo10-085.html
It may not be that a black hole would move to the middle of a galaxy, but rather a galaxy (without a black hole) would tend to engulf a black hole.
Nice idea Clifford :)
A black hole forming at the edge of the galaxy will not behave any differently from the star it came from. unless the supernova explosion that created it was very asymmetrical it would continue in essentially the same orbit that it was before. Soul Surfer, Tue, 31st Jul 2012
Assuming there are, in fact, super-massive black holes in the center of most of the larger galaxies (not the dinky galaxies), it may be that the large galaxies tend to capture & surround the large black holes that they encounter. Even if the combined mass of the stars is greater than the mass of the black hole, there would still be a tendency to move to surround the black hole.
My own interpretation :) is that the Black Holes we can 'infer' are from around the Big Bang, but that's just a guess of mine. yor_on, Wed, 1st Aug 2012