Gravitational Wave Resonance in Ultra-Light Dark Matter Halos

Ultra-Light Dark Matter (ULDM) halos constituted by Ultra-Light Axions (ULAs) generate gravitational potentials that oscillate in time. In this paper I show these potentials interact with gravitational waves, resonantly amplifying them. For all ULA masses considered, the resonance in the solar regio...

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Bibliographic Details
Published in:arXiv.org 2023-12
Main Author: Delgado, Paola C M
Format: Article
Language:English
Subjects:
Amplification
Dark matter
Galactic halos
Gravitational waves
Resonance
Online Access:Get full text
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Summary:Ultra-Light Dark Matter (ULDM) halos constituted by Ultra-Light Axions (ULAs) generate gravitational potentials that oscillate in time. In this paper I show these potentials interact with gravitational waves, resonantly amplifying them. For all ULA masses considered, the resonance in the solar region is currently negligible, while in a denser dark matter environment, which may arise in different scenarios, it might become significant. The frequency of the amplified gravitational wave is equal to the ULA mass in the case of first resonance band, which represents the most efficient scenario.
ISSN:2331-8422
DOI:10.48550/arxiv.2309.09946