Hawking Radiation Arising from the Electromagnetic Fields in the Kerr-Newman Black Hole

Abstract

Hawking radiation arising from the electromagnetic fields in the Kerr–Newman black hole is studied exactly by using the Newman–Penrose formalism and the tortoise coordinate. It is shown that the thermal radiation spectrum due to the photons in the Kerr–Newman black hole does not depend on the spins of the particles, and the effect is exactly same as that of the Klein–Gordon scalar particles.