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The evaporations of Primordial Black Holes (PBH) (via Hawking radiation) canproduce electrons/positrons ($e^-/e^+$) in the Galactic Centre (GC) regionwhich under the influence of the magnetic field of Centre region can emitsynchrotron radiation. These $e^-/e^+$ can also induce Inverse Comptonradiation due to the scattering with ambient photons. In this work threedifferent PBH mass distributions namely, monochromatic, power law and lognormaldistributions are considered to calculate such radiation fluxes. On the otherhand, annihilation or decay of dark matter in the Galactic Centre region canalso yield $e^-/e^+$ as the end product which again may emit synchrotronradiation in the Galactic magnetic field and also induce Inverse Comptonscattering. In this work a comparative study is made for these radiation fluxesfrom both PBH evaporations and from dark matter origins and theirdetectabilities are addressed in various ongoing and other telescopes as wellas in upcoming telescopes such as SKA. Moreover, constraints on the modelparameters are obtained from these experimental predictions. The variations ofthese radiation fluxes with the distance from the Galactic Centre are alsocomputed and it is found that such variations could be a useful probe todetermine the mass of PBH or the mass of dark matter.

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