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Many early universe theories predict the creation of Primordial Black Holes(PBHs). The PBHs could have masses ranging from the Planck mass to 10^5 solarmasses or higher depending on the formation scenario. Hawking showed that anyBlack Hole (BH) has a temperature which is inversely proportional to its mass.Hence a sufficiently small BH will thermodynamically radiate particles at anever-increasing rate, continually decreasing its mass and raising itstemperature. The final moments of this evaporation phase should be explosive.In this work, we investigate the final few seconds of the BH burst using theStandard Model of particle physics and calculate the energy dependent bursttime profiles in the GeV/TeV range. We use the HAWC (High Altitude WaterCherenkov) observatory as a case study and calculate PBH burst light curveswhich would be observed by HAWC.

Observational Characteristics of the Final Stages of Evaporating Primordial Black Holes