At http://phys.org/print351971891.html …
in a NASA Hubble Space Telescope image of a far away galaxy an extra-galactic jet of ejected plasma is seen to emerge from what is described as a black hole – at the centre of the galaxy. A sequence of Hubble images of knots running along the jets over a 20 year period of observation show the central knot catching up with the one in front and the jolt caused the first to then accelerate.
At http://phys.org/print352025831.html … the Large Hubble survey confirms the link between mergers and supermassive black holes (we are told). An unambiguous link between the presence of supermassive black holes that power high speed radion signal emitting jets, and the merger of galaxies. It is claimed the jets are the result of galaxies merging (and their respective black holes) – so another theory to account for the plasma jets. The paper was published in the Astrophysical Journal – but requires the acceptance of certain assumptions. For instance, the idea galaxies with bright luminous centres (galactic nuclei) are assumed to be the result of huge quantities of heated material circling around and being consumed by a super massive and hungry black hole. It then burps out a stream of plasma. Well, the plasma is the fact – but the assumption is just that.