The so called hotspots (often called bowshocks in HH-systems) are supposed to represent the new paradigm black holes.
The "lobes" represent plasma created directly out of the Chiral Higgs field by "pair production" at the black hole horizons with minimal annihilation effects, because positrons ear able to form positive quarks.
The plasma is pushed away from the horizons in contrast with mainstream physics.. For the chiral Higgs see: https://www.newscientist.com/article/mg22730354-600-possible-new-particle-hints-that-universe-may-not-be-left-handed/
Somehow the central stars have been scared away from the center of very massive galaxies, and either were afraid to come in, or came in and got kicked out," Ma said. The stellar orbits around the center of NGC 1600 indicate the latter, which "may be support for a binary black hole formed by a merger."
Read more at: http://phys.org/news/2016-04-supermassive-black-holes-lurking-universe.html#jCp