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http://hdl.handle.net/10773/31565
Título: | GW190521 as a Merger of Proca Stars: A Potential New Vector Boson of 8.7×10^{-13} eV |
Autor: | Bustillo, Juan Calderón Sanchis-Gual, Nicolas Torres-Forné, Alejandro Font, José A Vajpeyi, Avi Smith, Rory Herdeiro, Carlos Radu, Eugen Leong, Samson H W |
Data: | 24-Fev-2021 |
Editora: | American Physical Society |
Resumo: | Advanced LIGO-Virgo have reported a short gravitational-wave signal (GW190521) interpreted as a quasicircular merger of black holes, one at least populating the pair-instability supernova gap, that formed a remnant black hole of M_{f}∼142 M_{⊙} at a luminosity distance of d_{L}∼5.3 Gpc. With barely visible pre-merger emission, however, GW190521 merits further investigation of the pre-merger dynamics and even of the very nature of the colliding objects. We show that GW190521 is consistent with numerically simulated signals from head-on collisions of two (equal mass and spin) horizonless vector boson stars (aka Proca stars), forming a final black hole with M_{f}=231_{-17}^{+13} M_{⊙}, located at a distance of d_{L}=571_{-181}^{+348} Mpc. This provides the first demonstration of close degeneracy between these two theoretical models, for a real gravitational-wave event. The favored mass for the ultralight vector boson constituent of the Proca stars is μ_{V}=8.72_{-0.82}^{+0.73}×10^{-13} eV. Confirmation of the Proca star interpretation, which we find statistically slightly preferred, would provide the first evidence for a long sought dark matter particle. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/31565 |
DOI: | 10.1103/PhysRevLett.126.081101 |
ISSN: | 0031-9007 |
Versão do Editor: | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.081101 |
Aparece nas coleções: | CIDMA - Artigos DMat - Artigos GGDG - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PRL126(2021)081101.pdf | 775.61 kB | Adobe PDF | Ver/Abrir |
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