All articles tagged with #double detonation
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.
Scientists have found evidence supporting the double-detonation model for Type Ia supernovae, where an initial explosion in a helium shell triggers the star's explosion before reaching the Chandrasekhar limit, explaining the abundance of bright supernovae used as cosmic distance markers.
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 have captured the first visual evidence of a star undergoing a double detonation, supporting the theory that some Type Ia supernovae can explode via a two-stage process involving a white dwarf and stolen helium, which has significant implications for understanding cosmic expansion and the universe's evolution.
Astronomers have observed the first visual evidence of a star exploding twice, supporting the theory that some Type Ia supernovae result from a double-detonation process involving white dwarfs, which has implications for understanding cosmic expansion and dark energy.
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.
Astronomers have captured the first visual evidence of a white dwarf star undergoing a double detonation, where it explodes twice, challenging previous understanding that such stars only explode once after reaching the Chandrasekhar limit. Using the VLT, they studied supernova SNR 0509-67.5, revealing structures indicating a double explosion, which could reshape theories about supernova mechanisms and their role as cosmic distance markers.
A new study using data from ESA’s Gaia survey has revealed six additional runaway stars, two of which break the record for the fastest radial velocity of any runaway star ever seen. These stars were launched by Type 1a supernovas, which occur in binary star systems. The study also suggests that double detonation supernovae can produce runaway stars, which are faster than those caused by single detonation supernovae. The fastest star in the galaxy is J0927, with a radial velocity almost twice that of any other star in the galaxy.