Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.23839 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911339481399296 |
|---|---|
| author | Ge, Bo-Xuan Lim, Eugene A. Sperhake, Ulrich Evstafyeva, Tamara Cors, Daniela de Jong, Eloy Croft, Robin Helfer, Thomas |
| author_facet | Ge, Bo-Xuan Lim, Eugene A. Sperhake, Ulrich Evstafyeva, Tamara Cors, Daniela de Jong, Eloy Croft, Robin Helfer, Thomas |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_23839 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Hair is complicated: Gravitational waves from stable and unstable boson-star mergers Ge, Bo-Xuan Lim, Eugene A. Sperhake, Ulrich Evstafyeva, Tamara Cors, Daniela de Jong, Eloy Croft, Robin Helfer, Thomas General Relativity and Quantum Cosmology 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. |
| title | Hair is complicated: Gravitational waves from stable and unstable boson-star mergers |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2410.23839 |