Home » Astronomy and Astrophysics » Events » 2017-08-14, 3pm, Alexandra Kozyreva (Tel Aviv University), Diversity of pair-instability supernovae

2017-08-14, 3pm, Alexandra Kozyreva (Tel Aviv University), Diversity of pair-instability supernovae

Alexandra Kozyreva

The Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Israel

Diversity of pair-instability supernovae

Abstract:

In the talk, I will show the variety of observational properties of pair-instability supernovae. Among presented models are (1) those which retain massive hydrogen-helium envelope, and (2) those which lose hydrogen by the time of pair-instability explosion. The first class may look like type IIP (low-mass progenitors, 150 solar masses) and slow evolving superluminous supernovae (high-mass progenitors, 250 solar masses). The second class appears as type IIP with a short-living plateau (low-mass progenitors, 150 solar masses), double-peak subluminous supernovae (intermediate mass-progenitors, 175 solar masses), and superluminous supernovae with slow decaying tail (high-mass progenitors, 250 solar masses). Even though it may happened that we have not seen any pair-instability supernovae yet, our study predict the signatures of pair-instabilty explosion which should help to distinguish them among other supernovae.

Location: 31 Fitzwilliam Place, D02 XF86