2011/06/27 by Mew-Bing Wan · 5 citations
Physics and Astronomy · #Compact star #Cosmology and Gravitation Theories #Gamma-ray bursts and supernovae #Neutron #Neutron star #Phase space #Pulsars and Gravitational Waves Research #Star (game theory) #Universality (dynamical systems) #X-ray binary #X-ray burster #gr-qc
paper · pdf · doi:10.1088/0264-9381/28/15/155002
published in Classical and Quantum Gravity 28(15), 155002 (IOP Publishing) · 13 pages, 12 figures, 1 new reference added
openalex publication_date 2011/06/27 · arxiv created 2011/09/26 · arxiv updated 2011/09/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the neutron star axisymmetric critical solution previously found in the numerical studies of neutron star mergers. Using neutron star- like initial data and performing similar merger simulations, we demonstrate that the solution is indeed a semi-attractor on the threshold plane separating the basin of a neutron star and the basin of a black hole in the solution space of the Einstein equations. In order to explore the extent of the attraction basin of the neutron star semi-attractor, we construct initial data phase spaces for these neutron star- like initial data. From these phase spaces, we also observe several interesting dynamical scenarios where the merged object is supported from prompt collapse. The properties of the critical index of the solution, in particular, its dependence on conserved quantities, are then studied. From the study, it is found that a family of neutron star semi-attractors exist that can be classified by both their rest masses and ADM masses.