Duh, the propellants and explosions leave behind a vortex of electrically charged particles. That creates an electrical field, and all of the activity nearby makes those fields of particles flow and swirl in addition to radiating and reflecting light. The noises you hear in the space battle? Yup, those clouds of particles impacting on the hull. Just because you see SOME of the particles in the form of a wake vortex or explosive plume doesn't mean you're seeing ALL of the particles, and when those particles hit ships, it makes the sounds you hear.
Duh. *sheesh*
It's like playing skeptic whack-a-mole, and nobody commented on the appearance of the Pegasus? What a bunch of unobservant luzers.
Merry new year human scum!