Which phenomenon represents a higher order of magnitude in total instantaneous electromagnetic energy release, particularly in high-energy bands?

Answer

A Gamma-Ray Burst (GRB).

GRBs unleash a focused beam of gamma rays so intense that they represent an event of higher total instantaneous electromagnetic energy across the spectrum compared to the visible light of the associated supernova.

Which phenomenon represents a higher order of magnitude in total instantaneous electromagnetic energy release, particularly in high-energy bands?
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