2007/04/19 by Z. Meliani, R. Keppens · 8 citations
Physics and Astronomy · #Adiabatic process #Astronomy and Astrophysical Research #Astrophysics and Cosmic Phenomena #Gamma-ray burst #Gamma-ray bursts and supernovae #Interstellar medium #Shock wave #Stellar evolution #Stellar wind #astro-ph
paper · pdf · doi:10.1051/0004-6361:20077391
published in Astronomy and Astrophysics 467(2), L41-L44 (EDP Sciences) · Accepted in A&A Letter (04/04/2007)
arxiv created 2007/04/19 · openalex publication_date 2007/04/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Context.A significant fraction of progenitors for long gamma-ray bursts (GRBs) are believed to be massive stars. The investigation of long GRBs therefore requires modeling the propagation of ultra-relativistic blastwaves through the circumburst medium surrounding massive stars. We simulate the expansion of an isotropic, adiabatic relativistic fireball into the wind-shaped medium around a massive GRB progenitor. The circumburst medium is composed of a realistically stratified stellar wind zone up to its termination shock, followed by a region of shocked wind characterized by a constant density.