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Signatures of ultralight bosons in the orbital eccentricity of binary black holes

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arxiv 2403.02415 v2 pith:ZXGAT6DM submitted 2024-03-04 gr-qc astro-ph.COastro-ph.HEhep-phhep-th

Mateja Bošković , Matthias Koschnitzke , Rafael A. Porto This is my paper · ORCID
classification gr-qcastro-ph.COastro-ph.HEhep-phhep-th
keywords binaryblackeccentricityholesultralightcloudsdetectorsevolution
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We show that the existence of clouds of ultralight particles surrounding black holes during their cosmological history as members of a binary system can leave a measurable imprint on the distribution of masses and orbital eccentricities observable with future gravitational-wave detectors. Notably, we find that for nonprecessing binaries with chirp masses ${\cal M} \lesssim 10\,M_\odot$, formed exclusively in isolation, larger-than-expected values of the eccentricity, i.e. $e\gtrsim 10^{-2}$ at gravitational-wave frequencies $f_{\rm GW} \simeq 10^{-2}\,$Hz, would provide tantalizing evidence for a new particle of mass between $[0.5,2.5] \times 10^{-12}\,$eV in nature. The predicted evolution of the eccentricity can also drastically affect the in-band phase evolution and peak frequency. These results constitute unique signatures of boson clouds of ultralight particles in the dynamics of binary black holes, which will be readily accessible with the Laser Interferometer Space Antenna, as well as future mid-band and Deci-hertz detectors.

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Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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  2. Trails of clouds in binary black holes

    gr-qc 2025-12 conditional novelty 7.0 of 10

    Boson clouds around binary black holes generically deplete through orbital resonances, driving eccentricity and spin-orbit tilt toward fixed points—including off-equatorial ones—leaving observable gravitational-wave trails.

  3. Ultralight Boson Ionization from Comparable-Mass Binary Black Holes

    gr-qc 2025-09 conditional novelty 7.0 of 10

    Ionization of boson molecules bound to a black hole binary can dominate gravitational-wave losses during early inspiral, imprinting a turnover in the nanohertz GW background and circularizing the orbit.

  4. Signatures from metastable oppositely-charged black hole binaries in scalar Gauss-Bonnet gravity

    gr-qc 2025-05 conditional novelty 7.0 of 10

    In scalar Gauss-Bonnet gravity, inspiraling black holes with opposite scalar charges can undergo a sudden charge-flip, changing scalar radiation from dipolar to quadrupolar and inducing orbital eccentricity.

  5. Finite Coherence in Gravitational Waves from Tidally Excited Axion Clouds

    gr-qc 2026-06 unverdicted novelty 6.0 of 10

    Gravitational-wave radiation from tidally driven Bohr crossings of black-hole axion clouds is controlled by outgoing two-level coherence, finite only for intermediate Landau-Zener sweep rates.

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