All articles tagged with #calcium shells
Astronomers have captured the first clear image of a star that exploded twice, providing direct evidence for a double detonation mechanism in Type Ia supernovae, which has implications for understanding cosmic distances and the universe's expansion.
Astronomers using ESO's VLT have found visual evidence that a Type 1a supernova, SNR 0509-67.5, exploded twice through a double-detonation process, confirmed by the discovery of two separate calcium shells, supporting models where white dwarfs can explode before reaching the Chandrasekhar mass limit.
Astronomers captured the first visual evidence of a star undergoing a double explosion, using ESO's VLT to study supernova remnant SNR 0509-67.5, revealing two distinct calcium shells that confirm a double-detonation mechanism in a white dwarf, challenging previous models of Type Ia supernovae.