No mention in the article of the gravity bumps that LIGO and Virgo picked up. My theory is the star just added another layer of element formation. Perhaps it is making silicon in the core now. From what I’ve read about it a huge boost of Neutrinos will happen shortly before it explodes.
Neutrino. Is that a small Mexican neutron?
Interesting idea. If true it has about 6 months until the silicon-burning phase, and then boom. If SN1987A was any indication, the neutrino front precedes the light curve by 2 to 3 hours.