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@ARTICLE{Boskovic:604086,
      author       = {Boskovic, Mateja and Koschnitzke, Matthias and Porto
                      Pereira, Rafael Alejandro},
      title        = {{S}ignatures of ultralight bosons in the orbital
                      eccentricity of binary black holes},
      reportid     = {PUBDB-2024-00990, DESY-24-030. arXiv:2403.02415},
      year         = {2024},
      note         = {5 pages + 9 pages appendices and references, 8 figures},
      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 by
                      and large in isolation, greater-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.},
      keywords     = {black hole, binary (INSPIRE) / gravitational radiation,
                      frequency (INSPIRE) / new particle, mass (INSPIRE) / boson,
                      signature (INSPIRE) / cloud (INSPIRE) / gravitational
                      radiation detector (INSPIRE) / LISA (INSPIRE) / history
                      (INSPIRE)},
      cin          = {$Z_THAT$},
      cid          = {$I:(DE-H253)Z_THAT-20210408$},
      pnm          = {613 - Matter and Radiation from the Universe (POF4-613) /
                      DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe
                      (390833306)},
      pid          = {G:(DE-HGF)POF4-613 / G:(GEPRIS)390833306},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2403.02415},
      howpublished = {arXiv:2403.02415},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2403.02415;\%\%$},
      doi          = {10.3204/PUBDB-2024-00990},
      url          = {https://bib-pubdb1.desy.de/record/604086},
}