Bolometric lightcurves

In practice, this type of lightcurve is difficult to build because it misses in particular the contributions of $\gamma$. However, at the time of the first weeks, the majority of the light is emitted in the visible one. An example of lightcurve is presented in figure 5.5 exit of contardo2000. To the maximum, this lightcurve is asymmetrical, the rise being faster than the decrease. The supernova puts between 7 and 11 days to double its luminosity before the maximum and between 10 and 15 days to decrease of half after the maximum. The growth and the decrease are slower in the case of more luminous objects.

The second maximum is visible in many objects but it can vary much supernova with another. It appears moreover later for the most luminous supernovæ.

Lastly, in its ultimate phase, the rate of decrease is identical of one supernova to the other with a value $0.026 \pm 0.002$ magnitude per day.

Figure 5.5: Curve of bolometric light of sn1992bc, contardo2000