On 21 May 2016 at 15:50, xxxxxx@juno.com wrote:

> A magnetic bubble also explains the jump flash at the beginning and
> end of the jump by its formation to enter jump space, or
> its dissolving at the end when the ship emerges from jump space.  

No need to go that far. Jump flash is explainable simply by the fact
that you have a large mass appearing/disappearing.

That's gonna cause major changes in the curvature of space-time
sending out "ripples". Some of that could easily come out as EM
radiation (there should be some distinctive gravity waves as well).

--
Leonard Erickson (aka shadow)
shadow at shadowgard dot com