dorsal/arxiv
View SchemaLimits of vacuum-template subtraction for LISA massive black hole binary sources in realistic environments
| Authors | Lorenz Zwick |
|---|---|
| Categories | |
| ArXiv ID | 2601.06684vv1 |
| URL | https://arxiv.org/abs/2601.06684 |
| License | http://creativecommons.org/publicdomain/zero/1.0/ |
Abstract
We investigate the impact of gravitational wave (GW) dephasing due to gas accretion on the subtraction of massive black hole (MBH) binary signals over 4 yr of LISA data in the context of the global-fit. Based on state of the art predictions for the population of merging MBHs, we show that imperfect subtraction with vacuum waveform templates leaves a GW residual with an SNR of $3.2^{+5.4}_{-1.9}\times \sqrt{f_{\rm Edd} \langle \dot n \rangle/(20\, {\rm yr}^{-1})}$, where $f_{\rm Edd}$ is the typical Eddington ratio and $\langle \dot n \rangle$ the mean merger rate of LISA MBH binaries. We characterize the dependence of the residual on key population hyper-parameters, provide a simple fitting function and discuss detection and mitigation strategies.
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"abstract": "We investigate the impact of gravitational wave (GW) dephasing due to gas accretion on the subtraction of massive black hole (MBH) binary signals over 4 yr of LISA data in the context of the global-fit. Based on state of the art predictions for the population of merging MBHs, we show that imperfect subtraction with vacuum waveform templates leaves a GW residual with an SNR of $3.2^{+5.4}_{-1.9}\\times \\sqrt{f_{\\rm Edd} \\langle \\dot n \\rangle/(20\\, {\\rm yr}^{-1})}$, where $f_{\\rm Edd}$ is the typical Eddington ratio and $\\langle \\dot n \\rangle$ the mean merger rate of LISA MBH binaries. We characterize the dependence of the residual on key population hyper-parameters, provide a simple fitting function and discuss detection and mitigation strategies.",
"arxiv_id": "2601.06684",
"authors": [
"Lorenz Zwick"
],
"categories": [
"gr-qc",
"astro-ph.HE"
],
"license": "http://creativecommons.org/publicdomain/zero/1.0/",
"title": "Limits of vacuum-template subtraction for LISA massive black hole binary sources in realistic environments",
"url": "https://arxiv.org/abs/2601.06684",
"version": "v1"
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