Uncovering Mysteries of Supernova Explosions Through Radio Signals

Astronomers have detected the radio signature of a Type Ia supernova explosion caused by a white dwarf that gained enough mass from a companion star to trigger a self-destruct mechanism. The discovery, published in Nature, challenges the long-held theory that Type Ia supernovae are caused by pairs of white dwarfs merging together. The supernova, named 2020eyj, was found to belong to a rare subclass of Type Ia supernovae, and its radio signal provides a natural explanation for the consistency of energy release in these cosmic objects. The discovery raises questions about why similar radio signals have not been detected in other Type Ia supernovae.