Stochastic and Resolvable Gravitational Waves from Ultralight Bosons.
Phys Rev Lett
; 119(13): 131101, 2017 Sep 29.
Article
en En
| MEDLINE
| ID: mdl-29341674
ABSTRACT
Ultralight scalar fields around spinning black holes can trigger superradiant instabilities, forming a long-lived bosonic condensate outside the horizon. We use numerical solutions of the perturbed field equations and astrophysical models of massive and stellar-mass black hole populations to compute, for the first time, the stochastic gravitational-wave background from these sources. In optimistic scenarios the background is observable by Advanced LIGO and LISA for field masses m_{s} in the range â¼[2×10^{-13},10^{-12}] and â¼5×[10^{-19},10^{-16}] eV, respectively, and it can affect the detectability of resolvable sources. Our estimates suggest that an analysis of the stochastic background limits from LIGO O1 might already be used to marginally exclude axions with mass â¼10^{-12.5} eV. Semicoherent searches with Advanced LIGO (LISA) should detect â¼15(5) to 200(40) resolvable sources for scalar field masses 3×10^{-13} (10^{-17}) eV. LISA measurements of massive BH spins could either rule out bosons in the range â¼[10^{-18},2×10^{-13}] eV, or measure m_{s} with 10% accuracy in the range â¼[10^{-17},10^{-13}] eV.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2017
Tipo del documento:
Article
País de afiliación:
Alemania