Le 14 décembre 2012
À 10h30
Salle de Cours – Grande Coupole
Luc DESSART
LAM
In this talk, I will review the basic properties of supernova light curves and spectra. I will first focus on core-collapse supernovae of Type II, which stem from the explosion of blue- and red-supergiants, and discuss the various evidences that suggest that such events stem from low to moderate mass single massive stars. A similar conclusion arises from the analysis of SN Ib/c radiation, supporting their association with low to moderate mass massive stars in close binaries. These results have important implications for massive-star evolution, massive-star explosion, the nature of the compact remnant, or the role of core-collapse supernovae for the chemical evolution of the Universe. In the second part of the talk, I will present results from more « exotic » supernovae, in particular the possibility of producing super-luminous events in association with the electron-positron pair-production instability in supermassive progenitor stars or through the influence of a young magnetar.