Doesn't powering down active Alcubierre-White propulsion produce something akin to this
Is it possible that a FRB could be an Alcubierre-White warp drive equipped spacecraft skipping through space/time and taking breaks every 15 minutes to make minimally destructive progress around a galaxy.
https://www.extremetech.com/extreme/140635-the-downside-of-warp-drives-annihilating-whole-star-systems-when-you-arrive
Biting the hand that feeds IT
