Análisis de supernovas asociadas a estallidos de radiación gamma

BERSTEN MELINA; FAVARO, M. E

Conferencia; Reunion Anual de la Asociacion Argentina de Astronomia; 2019

In this work we present the analysis of a sample of 5 supernovae (SNe) associated with long gamma-ray bursts (LGRB), for which we have bolometric light curves and expansion velocities. Using a one-dimensional hydrodynamic code that simulates stellar explosions, we determine physical parameters of the explosion and of the stellar progenitors. Three SNe of the sample (SN 1998bw, 2003dh, 2012bz) were successfully modeled using a significantly more massive stellar model (MZAMS = 30~M⊙) than those usually employed for SNe without associated LGRB (MZAMS < 20~M⊙). In addition, it was needed to assume the formation of a stellar-mass black hole to reproduce the observations satisfactorily.