2024/10/31 by Bo-Xuan Ge, Ge, Bo-Xuan, Eugene A. Lim +13 · 1 voice · 1 citation
Economics, Econometrics and Finance · Physics and Astronomy · #Astronomy #Astrophysics #Boson #Classical mechanics #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #German Economic Analysis & Policies #Gravitation #Gravitational collapse #Gravitational wave #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Star (game theory) #gr-qc
paper · pdf · doi:10.48550/arxiv.2410.23839
openalex publication_date 2024/10/31 · arxiv published 2024/10/31 · openalex created_date 2025/10/10 · arxiv updated 2025/11/20 · openalex updated_date 2026/08/06
We explore the gravitational-wave emission from head-on collisions of equal-mass solitonic boson-star binaries from simulations spanning a two-dimensional parameter space, consisting of the central scalar-field amplitude of the stars and the solitonic potential parameter. We report the gravitational-wave energies emitted by boson-star binaries which, due to their combination of moderately high compactness with significant deformability, we often find to be louder by up to an order of magnitude than analogous black-hole collisions. The dependence of the radiated energy on the boson-star parameters exhibits striking needle-sharp features and discontinuous jumps to the value emitted by black-hole binaries. We explain these features in terms of the solitonic potential and the stability properties of the respective individual stars.