Supernova SN 2018byg triggered by a helium-shell double detonation, study finds

Supernova SN 2018byg triggered by a helium-shell double detonation, study finds
Astronomers have recently conducted photometric and spectroscopic observations of SN 2018byg, a peculiar Type Ia supernova. Results of these observations, presented in a paper published January 3 on the arXiv pre-print server, suggest that this cosmic explosion was caused by double detonation of a massive helium shell.
phys.org
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