APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Elena Sorokina (Lomonosov Moscow State Univ.)
Title: Interaction with hydrogen-less envelopes as the least energetic model for a bulk of Type I Superluminous Supernovae
Date (JST): Thu, Feb 12, 2015, 13:30 - 14:30
Place: Seminar Room A
Related File: 1390.pdf
Abstract: We demonstrate that the bulk of SLSNe Ic including those with the narrowest light curves like SN 2010gx and the broadest ones like PTF09cnd can be explained by the interaction of SN ejecta with circumstellar matter (CSM). It requires just a moderate explosion energy (2 - 4 foe), but ejected and envelope masses are different. Only 5 Msun of carbon and oxygen is needed to reproduce SN~2010gx light curve, while the best fit for the light curve of PTF09cnd corresponds to the model of almost 55 Msun in SN ejecta and a shell. We discuss also how the composition of the envelope influences the SLSN light curve.