2006/09/30 by Christian D. Ott, C. D. Ott, Harald Dimmelmeier +11 · 4 citations
Physics and Astronomy · #Astrophysics #Classical mechanics #Equation of state #Gamma-ray bursts and supernovae #General relativity #Gravitational collapse #Gravitational wave #Instability #Mechanics #Neutrino Physics Research #Numerical relativity #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Supernova #Theory of relativity #astro-ph #gr-qc
paper · pdf · doi:10.1103/physrevlett.98.261101
published as Phys.Rev.Lett.98:261101,2007 · 4 pages, 4 figures, accepted for publication in Phys. Rev. Lett
arxiv created 2007/05/01 · openalex publication_date 2007/06/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present 2D and 3D simulations of the collapse of rotating stellar iron cores in general relativity employing a nuclear equation of state and an approximate treatment of deleptonization. We compare fully general relativistic and conformally flat evolutions and find that the latter treatment is sufficiently accurate for the core-collapse supernova problem. We focus on gravitational wave (GW) emission from rotating collapse, bounce, and early postbounce phases. Our results indicate that the GW signature of these phases is much more generic than previously estimated. We also track the growth of a nonaxisymmetric instability in one model, leading to strong narrow-band GW emission.