Aeronaut wrote: This is how the plasmoid and field are connected.
As far I was concerned the plasmoid is the field by definition. ie. when the magnetic field lines break and reconnect to form an closed structure, that is called a plasmoid.
This can only happen in the presence of a plasma with a temperature and pressure such that the collisional effects (electrical resistivity) enable transfer of energy from the ions & electrons to/from the field, and so change the topology of the magnetic field.
(PS. it is refreshing to have a thread that is slightly more on-topic than some of the other recent discussions)