Discriminating and Constraining the Synchrotron and Inverse Compton Radiations from Primordial Black Hole and Dark Matter at the Galactic Centre Region

Understand

The evaporations of Primordial Black Holes (PBH) (via Hawking radiation) can produce electrons/positrons ($e^-/e^+$) in the Galactic Centre (GC) region which under the influence of the magnetic field of Centre region can emit synchrotron radiation.

• These $e^-/e^+$ can also induce Inverse Compton radiation due to the scattering with ambient photons.
• In this work three different PBH mass distributions namely, monochromatic, power law and lognormal distributions are considered to calculate such radiation fluxes.
• On the other hand, annihilation or decay of dark matter in the Galactic Centre region can also yield $e^-/e^+$ as the end product which again may emit synchrotron radiation in the Galactic magnetic field and also induce Inverse Compton scattering.