When black holes collide, they might release fragments, like "crumbs" of black holes. These "crumbs" could emit enough Hawking radiation, a type of energy predicted by Stephen Hawking, to be detected with today's instruments. This could be the easiest way to directly prove Hawking's theory, which states that black holes emit radiation due to quantum effects near their event horizon.

Hawking radiation makes black holes lose energy and eventually explode. However, this radiation hasn't been directly observed yet. Astrophysicists think collisions between black holes might release small fragments that emit detectable Hawking radiation.

A new model by Giacomo Cacciapaglia and his team from the University of Lyon suggests that when black holes merge, they produce gravitational waves and small black hole fragments. These fragments could explain missing energy in black hole mergers, as they might be storing it.

These small fragments are expected to release strong Hawking radiation as gamma rays and neutrinos. The radiation increases as the fragments approach their end, leading to a final explosion. Observatories like H.E.S.S., HWAC, and LHAASO might detect these gamma-ray bursts.

Recently, the LHAASO observatory recorded high-energy events that couldn't be linked to known sources. These might be the radiation from exploding black hole fragments. If so, we might soon directly observe Hawking radiation from these "crumbs" proving Hawking's 50-year-old theory.