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Spectral Lags of Gamma-Ray Bursts from Primordial Black Hole (PBH) Evaporations

Primordial Black Holes (PBHs), which may have been created in the early Universe, are predicted to be detectable by their Hawking radiation. PBHs with an initial mass of 5.0 * 10^14 g should be expiring today with a burst of high energy particles. Evaporating PBHs in the solar neighborhood are candidate Gamma-Ray Bursts (GRBs) progenitors. We propose spectral lag, which is the temporal delay between the high energy photon pulse and the low energy photon pulse, as a possible method to detect PBH evaporation events with the Fermi Gamma-ray Space Telescope Observatory.

preprint2009arXivOpen access
T. N. UkwattaJ. H. MacGibbonW. C. ParkeK. S. DhugaA. EskandarianN. GehrelsL. MaximonD. C. Morris
hep-phastro-ph.HEgr-qchep-th
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T. N. UkwattaJ. H. MacGibbonW. C. ParkeK. S. DhugaA. EskandarianN. GehrelsL. MaximonD. C. Morris

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