Dear bobbi kalilak!
Black Holes are 4D Space objects and so 5D spacetime objects.
They so become the 'bridges' between 3D perceivable space of 'volume' and the 4D extension of this where the 3D volume is the BOUNDARY for the 4D volume.
This is like the bottom of your cup as a circle extended as a cylinder being a 2D boundary for the 3D coffee or tea inside the cup.
So the jets coming out of Black Holes are like 'burps' of 4D manifesting as 'gas bubbles' in the volume sense.
They are 3D shadows manifesting as celestial astrophysics and so as gamma rays or electron-positron jets mainly.
The scientists are surprised because they think 3D and cant envison that the interior of Black Holes is higherD.
All they have to do is change their modellings and they would 'get it' as a natural exchange mechanics between Black Holes as Energy Absorbers (like a female yoni of Isis symbolically) in relationship with White Holes as Energy Emitters (like the Phallus of Osiris symbolically).
The Black Holes are so emitting 'love juices' from the celestial heavens.