Dynamics and Gravitational Wave Signature of Collapsar Formation

Details Dynamics and Gravitational Wave Signature of Collapsar Formation Dynamics and Gravitational Wave Signature of Collapsar Formation

2010-12-08

arxiv.org/abs/1012.1853v1

Phys.Rev.Lett.106:161103,2011

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 4 figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.106.161103

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.

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