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15-16 janvier 2015
Institut Henri Poincaré
Fuseau horaire Europe/Paris

On pair-instability Supernovae explosions

16 janv. 2015 à 14:39
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


Prof. Pascal Chardonnet (Université de Savoie/LAPTH)


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

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