Global time-frequency search for stellar-mass binary black holes in LISA
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| Format: | Preprint |
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2025
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| _version_ | 1866911705934594048 |
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| author | Bandopadhyay, Diganta Chapman-Bird, Christian E. A. Vecchio, Alberto |
| author_facet | Bandopadhyay, Diganta Chapman-Bird, Christian E. A. Vecchio, Alberto |
| contents | We present a complete pipeline for detecting and characterizing gravitational waves (GWs) produced by the inspiral of stellar-mass binary black holes in data from the Laser Interferometer Space Antenna (LISA). The analysis framework relies on an efficient time-frequency implementation of an adaptive semi-coherent detection statistic, which we show to be robust against non-stationary noise and the presence of gaps of varying duration and cadence. The search is able to detect signals with coherent signal-to-noise ratios as low as $\approx 11-14$ over the full parameter space of binary black holes with spins aligned to the orbital angular momentum and orbital eccentricity $\le 0.01$ when deployed on the 2-year-long LISA Data Challenge Yorsh. The search can be run within a day using $\approx 40$ GPUs. The techniques presented here have wider applications in GW astronomy, in particular the search for extreme-mass-ratio inspirals in LISA data. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_19047 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Global time-frequency search for stellar-mass binary black holes in LISA Bandopadhyay, Diganta Chapman-Bird, Christian E. A. Vecchio, Alberto General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics We present a complete pipeline for detecting and characterizing gravitational waves (GWs) produced by the inspiral of stellar-mass binary black holes in data from the Laser Interferometer Space Antenna (LISA). The analysis framework relies on an efficient time-frequency implementation of an adaptive semi-coherent detection statistic, which we show to be robust against non-stationary noise and the presence of gaps of varying duration and cadence. The search is able to detect signals with coherent signal-to-noise ratios as low as $\approx 11-14$ over the full parameter space of binary black holes with spins aligned to the orbital angular momentum and orbital eccentricity $\le 0.01$ when deployed on the 2-year-long LISA Data Challenge Yorsh. The search can be run within a day using $\approx 40$ GPUs. The techniques presented here have wider applications in GW astronomy, in particular the search for extreme-mass-ratio inspirals in LISA data. |
| title | Global time-frequency search for stellar-mass binary black holes in LISA |
| topic | General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2510.19047 |