Note
Seules les adresses mails institutionnelles sont acceptées lors de la création d'un compte. La création de compte est modérée, merci d'attendre leur validation. Only institutional email addresses will be accepted when asking for an account. Account creation is moderated, please wait until then.
15-16 janvier 2015
Institut Henri Poincaré
Fuseau horaire Europe/Paris

On pair-instability Supernovae explosions

16 janv. 2015 à 14:39
14m
Chair: Bartjan Van Tent, Amphi Hermite (Institut Henri Poincaré)

Chair: Bartjan Van Tent, Amphi Hermite

Institut Henri Poincaré

11, rue Pierre et Marie Curie 75005 Paris

Orateur

Prof. Pascal Chardonnet (Université de Savoie/LAPTH)

Description

According to theoretical models, massive stars with masses within the 100- 250 solar mass range should explode as pair-instability supernovae (PISNe). Since the first stars of the Universe are believed to be very massive, these supernovae should play a signicant role in the early stages of its history. But these stars represent the last unobserved population, owing to detection limits of current telescopes. In this presentation, we analyze pair-instability supernovae explosions using various numerical codes. We evolve series of the congurations of oxygen cores to establish a range of masses and initial conditions where this type of explosion is possible. We also study the role of possible instabilities in the propagation of shockwaves during the last stage of the explosion. This investigation could help us to predict the observational properties of PISNe for future space and ground telescopes and the possible connections with Gamma-Ray Bursts.

Auteur principal

Prof. Pascal Chardonnet (Université de Savoie/LAPTH)

Documents de présentation

Your browser is out of date!

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

×