Special Universe Lecture: Predicting the radiative display of Type Ia Supernovae: 2. beyond the standard model

by Stephane Blondin (Laboratoire d’Astrophysique de Marseille, France)

seminar room, basement (Universe Cluster, Boltzmannstr. 2, Garching)

seminar room, basement

Universe Cluster, Boltzmannstr. 2, Garching

Note time change! Abstract: Despite the successes of the standard Chandrasekhar-mass model to explain the observed properties of Type Ia supernovae (SNe Ia), they systematically fail to reproduce the faster light-curve evolution of low-luminosity events. Stephane will show that an ejecta below the Chandrasekhar mass is essential in reproducing the rapidly-declining light curves characteristic of SNe Ia at the faint end of the luminosity function. He will also demonstrate that such sub-Chandrasekhar-mass models present fundamental difficulties in reproducing the post-maximum evolution of brighter events. These results imply that a range of progenitor white dwarf masses is needed to reproduce the full range of observed SN Ia properties, and hence make a strong case for the existence of multiple progenitor channels for these events. Stephane is a Cluster guest. Local host: Bruno Leibundgut (ESO)
Your browser is out of date!

Update your browser to view this website correctly. Update my browser now