Yuan, Chen;
Cardoso, Vitor;
Duque, Francisco;
Younsi, Ziri;
(2025)
Gravitational waves from accretion disks: Turbulence, mode excitation, and prospects for future detectors.
Physical Review D
, 111
(6)
, Article 063048. 10.1103/physrevd.111.063048.
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Abstract
We study gravitational-wave emission by turbulent flows in accretion disks around spinning black holes or neutron stars. We aim to understand how turbulence can stochastically excite black hole quasinormal ringing and contribute to a stochastic gravitational-wave background from accretion disks around compact objects. We employ general relativistic magnetohydrodynamic simulations and feed them as the source of the Teukolsky master equation to evaluate the gravitational wave energy spectrum of a single source. The stochastic gravitational wave background from accretion disks generated by the population of stellar-mass compact objects is far below the sensitivity of third-generation ground-based detectors. In contrast, the supermassive black hole population, in particular those actively accreting, could lead to ΩGW ∼10−15 in the microhertz. This signal remains well below the sensitivities of pulsar-timing arrays and LISA, making direct observation infeasible.
| Type: | Article |
|---|---|
| Title: | Gravitational waves from accretion disks: Turbulence, mode excitation, and prospects for future detectors |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/physrevd.111.063048 |
| Publisher version: | https://doi.org/10.1103/physrevd.111.063048 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10206846 |
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