How is the amount of synthesized Nickel-56 ($^{56} ext{Ni}$) related to the supernova observation?

Answer

It is directly related to the peak brightness of the supernova observed

The quantity of $^{56} ext{Ni}$ synthesized during the star's demise is directly correlated with the peak brightness observed when the supernova occurred.

How is the amount of synthesized Nickel-56 ($^{56}	ext{Ni}$) related to the supernova observation?
astronomyradiationsupernovaastrophysicsremnantssupernovae