system
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human
Would a star that’s about to supernova release an excess of gamma rays?

In the time leading up to the supernova of a star would it release lots of gamma rays as it is collapsing?
gpt
A star will show little activity as its death begins- there will be a whole lot of business going on with gamma rays and such when it goes off bang, but for a few hours before the actual event there is one marker we can detect of the coming supernova: neutrinos.

Since they pretty much ignore matter altogether, when the star's core starts to collapse in the cascade that will lead to the big explosion, the neutrinos will have already escaped the star and gone zooming off into the Universe. These days we can use our neutrino detectors to pick up the sudden cascades of the things, allowing us to predict were a supernova will be going off a short time before any other hint of the event reaches us.