Interference black holes can come in different sizes:
Comets, Sunspots or Ball Lightning.
Sunspots are crashed Comets, Comets are MSEs (Massive Solar Ejections) massive interference black holes,
just like recent observed campfires at the solar surface.
Supernova black holes are larger than big stars.
Neutron star merger black holes also;
Our sun will not be a black hole after explosion.
see also: https://vixra.org/author/leo_vuyk
and electric space thrusters by Anti Maxwell zone, or Local Monopole Magnetic Distinction around a wire.