New evidence that some supernovae may be a "double detonation"
10 months ago
- #astronomy
- #supernovae
- #white-dwarfs
- Type Ia supernovae are crucial for measuring cosmic distances due to their consistent brightness.
- They result from white dwarf explosions, often triggered by reaching a critical mass through added material.
- An alternative 'double detonation' theory suggests surface explosions can reignite fusion without reaching critical mass.
- White dwarfs, remnants of Sun-like stars, are rich in carbon and oxygen but cannot fuse these elements on their own.
- Binary systems can provide the necessary material to white dwarfs to surpass the critical mass and trigger supernovae.