Search for Primordial Black Holes with SGARFACE

Understand

The Short GAmma Ray Front Air Cherenkov Experiment (SGARFACE) uses the Whipple 10 m telescope to search for bursts of $\gamma$ rays.

• SGARFACE is sensitive to bursts with duration from a few ns to $\sim$20 $\mu$s and with $\gamma$-ray energy above 100 MeV.
• SGARFACE began operating in March 2003 and has collected 2.2 million events during an exposure time of 2267 hours.
• A search for bursts of $\gamma$ rays from explosions of primordial black holes (PBH) was carried out.