A theoretical mechanism in which Schwinger electron-positron pair creation is efficiently triggered in the magnetosphere of the Galactic-center supermassive black hole Sgr A*. A vortex-driven magnetic field several orders of magnitude stronger than standard estimates (near 6e12 G by equipartition) causes charged particles frozen onto co-rotating field lines to undergo magneto-centrifugal acceleration near the light cylinder; the resulting charge separation parametrically excites Langmuir waves whose electric field grows exponentially until it reaches the Schwinger critical threshold, initiating efficient pair production that saturates through annihilation. Developed for a Kerr-type Sgr A* of spin a~0.65.
A theoretical astrophysics study proposing that Schwinger electron-positron pair creation can be efficiently triggered by magneto-centrifugal effects in the magnetosphere of the Galactic-center super…