  We show that it is possible to observe the Hawking radiation emitted by small
black holes assumed to form in catastrophic astrophysical events such as black
hole mergers. Gamma ray bursts in the TeV range are unique footprints of these
asteroid-mass black hole morsels ejected during the merger. The time delay of
the gamma ray bursts from the gravitational wave event is correlated to the
mass distribution of the morsels. The integrated mass of the morsels allowed by
the unaccounted merger mass leads to a Hawking induced radiation in photons
that is above the sensitivity of atmospheric Cherenkov telescopes such as HESS,
LHAASO and HAWC.
