Accelerated expansion and lightcurves

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TrickyDicky
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Is the time dilation associated to cosmological redshift that can be seen as a photometric slowing of the SNe Ia lightcurves directly related to the accelerated expansion seen on these same type of supernova from 1998? If not, what's the difference?

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nobody here heard of the time dilation test? or lightcurves?
 
What time dilation are you referring to , I know they tested the gravitational red-shift of light , with the pound-Rebka experiment and verified gravitational time dilation