What the extinction of a massive star teaches us about the origin of black holes
Astronomers explain how a massive star in the Andromeda galaxy transformed into a black hole without a typical supernova explosion.
Recent research published in the journal Science reveals that M31-2014-DS1, a supergiant star 13 times heavier than our Sun, slowly faded away rather than undergoing a supernova explosion. This star, located in the Andromeda galaxy, became nearly undetectable between 2014 and 2024, diminishing to only one-tenth thousandths of its previous brightness observed in the visible spectrum and near-infrared. This enigmatic behavior has prompted scientists to rethink the lifecycle of massive stars and the formation of black holes.
The study conducted by American researchers suggests that not all massive stars end their lives in dramatic supernova explosions. Instead, some may silently collapse under their own gravity, leading to the formation of stellar black holes that could vastly outnumber previously estimated figures. This new perspective challenges existing theories regarding the evolution of massive stars and how they contribute to the cosmic population of black holes.
Understanding the transformation from a massive star to a black hole without a supernova could have significant implications for our knowledge of the universe. It may reshape models of stellar development, impact the study of galactic evolution, and deepen our understanding of black holes' origins, enhancing our overall grasp of cosmic phenomena and the life cycles of stars.