see also; The Jean de Climont interesting video on the pioneer 10 an 11 anomalies.
Two equal sized splitted black holes are needed to form a stallar or galaxy disc system.
Starting with the curved plasma fillaments left behind by the two self propelling Tadpole black holes searching for each other by Axion vacuum gravity.
The form an electric magnetic Birkeland Alven carousel around each star/galaxy.
Working as an electric pump by electron /plasma streams and ( below)
Below: The Mystery of a double parallel jet from two young stars. seem to indicate the possibility of a double Birkeland-Alven dual Black Hole based system. see:
see also; Lukasz Tychoniec van het Leiden Observatorium. Een andere Leidse sterrenkundige, Martijn L. van Gelder, kon de chemische samenstelling van de jets achterhalen. Bron: NRAO.