Dynamics and gravitational wave signature of collapsar formation

• Main Authors: Ott, C.D (Author), Reisswig, C. (Author), Schnetter, E. (Author), O'Connor, E. (Author), Sperhake, U. (Author), Loeffler, F. (Author), Diener, P. (Author), Abdikamalov, E. (Author), Hawke, I. (Author), Burrows, A. (Author)
• Format: Article
• Language: English
• Published: 2010-12-08.
• Subjects: Article
• Online Access: Get fulltext

We perform 3+1 general relativistic simulations of rotating core collapse in the context of the collapsar model for long gamma-ray bursts. We employ a realistic progenitor, rotation based on results of stellar evolution calculations, and a simplified equation of state. Our simulations track self-consistently collapse, bounce, the postbounce phase, black hole formation, and the subsequent early hyperaccretion phase. We extract gravitational waves from the spacetime curvature and identify a unique gravitational wave signature associated with the early phase of collapsar formation