And that was me ALSO forgetting to log in and being anonymous!
The Orionis Bow Shock is similar to our own Sun's, 'Heliospheric' Bow Shock (and planetary bow shock within it) but the energy emitted by the compression of the fields as they meet is more visible due to the high gas content of the 'background field' nebula. It's not unique, just look at it's cousin in the distance, and scores of papers on shocks.
The original 1995 explanation by NASA referred simply to the 'solar winds' hitting the nebula gas which, as the pioneers and Voyagers have discovered, cannot describe the primary process going on at the dense oscillating particle shock. Frankly nobody knows much detail, except that particles are propagated there at an incredible rate and density, with fantastic energy. A bit like what happens at the nose of a space shuttle coming back through the atmosphere in fact!
Simply; EM waves travel through the Nebula at 'c', and, once they've passed through the shock, they're travelling at 'c' with repect to Orionis, but blue shifted. Think about that.
This is exactly what happens at our Heliopause and the Earths bow shock, indeed also to the shuttle, where light is travelling through the atmosphere at 'c', but once it reaches the shuttle skin itself it's doing 'c' with respect to the shuttle.
If there IS a quantum field there MUST be a quantum mechanical process at each change point (or Doppler shift zone).
Now it just so happens there's a thick zone of oscillating 'spin' particles at every one of these change points! And density and oscillation rate just happen to exactly coincide with the Doppler shift required at exactly that point.
Coincidence?
Possibly not when it resolves all anomalies in astrophysics. Lensing delays of 3 years, which ought to be nearer 3 hours, are simply the difference between EM waves going through and round a receeding galaxy all at 'c' in the frame they're travelling in.
Nature doesn't waste energy do things for nothing! And the model, of discrete fields, as Einsteins 1952 paper, and Fresnel/Stokes etc's work, is fully falsifiable, and with a long string of predictions.
Can anybody out there see the light in the dark grey matter yet?
"All at 'c'" is an apt term. Best wishes.
Peter Jackson