How infrared echoes reveal hidden black hole star-shredding events?

Astronomers spotted a massive infrared flare in a distant galaxy that stayed bright for a year with no optical counterpart, pinpointing it to the galactic nucleus. Dust thermal emission models revealed it was powered by a hidden tidal disruption event—a star ripped apart by a supermassive black hole—releasing roughly the energy of a trillion supernovae. This obscured class is systematically missed by traditional optical surveys, skewing what we know about how often black holes devour stars.