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More Eccentric, Not Always Less Detectable: High Mass Holds Its Ground, Low Mass Loses Reach — arXiv:2610.41229

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.41229
License (as archived): CC0-1.0
Archived: 2026-11-03T05:57:52.326Z
SHA-256 of the archived text: 7e8d9a589e913f9085851f58796ece2694c825f6dc4cb890f519b9faa08a2343
Stable URL of this page: https://metraipolis.com/documento/dc_85fd7adea699

How to cite

More Eccentric, Not Always Less Detectable: High Mass Holds Its Ground, Low Mass Loses Reach — arXiv:2610.41229 — arXiv (en), https://arxiv.org/abs/2610.41229 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_85fd7adea699 (Metraipolis archive dc_85fd7adea699, sha256 7e8d9a589e913f9085851f58796ece2694c825f6dc4cb890f519b9faa08a2343)

BibTeX

@misc{dc85fd7adea699,
  title = {More Eccentric, Not Always Less Detectable: High Mass Holds Its Ground, Low Mass Loses Reach — arXiv:2610.41229},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.41229},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_85fd7adea699; sha256 7e8d9a589e913f9085851f58796ece2694c825f6dc4cb890f519b9faa08a2343},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.41229. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Gravitational waves from eccentric compact binary coalescences trace dynamical binary formation, but matched-filtering searches responsible for most detections rely on quasicircular templates. Quantifying any sensitivity loss is crucial for assessing population completeness and the need for dedicated eccentric template banks. We present the first systematic GstLAL search study spanning eccentricities up to $e_{\rm 15Hz}=0.99$ and broad ranges of chirp mass, mass ratio, inclination, and aligned spin. Using TEOBResumS-Dalí waveforms, we inject eccentric signals and measure recovered signal-to-noise ratio, signal-consistency statistics, false-alarm rate, and sensitive volume and distance. For high-mass binaries ($\mathcal{M}_c\gtrsim30\,M_\odot$), sensitive distance is nearly independent of eccentricity, demonstrating that greater eccentricity does not necessarily reduce search sensitivity. In contrast, for low-mass binaries, sensitive distance falls by up to $\sim50\%$ near $e_{\rm 15Hz}\approx0.75$. Although the absolute loss in reach is modest given their low quasicircular sensitivity, this relative reduction exceeds the increase in sensitive distance between the second and third observing runs of the LIGO--Virgo--KAGRA collaboration and is consistent with previous low-mass studies. We also find that waveform matches at fixed source parameters substantially overpredict search sensitivity loss, meaning that the pipeline's signal-consistency test and maximization over its template bank mitigate much of the predicted sensitivity loss. This highlights the need for end-to-end injection campaigns to establish the detectability of eccentric binaries.

Tema degli esploratori: fisica e astronomia (elenco arXiv astro-ph.IM, nuovi lavori del giorno).
Categorie arXiv: General Relativity and Quantum Cosmology (gr-qc) ; High Energy Astrophysical Phenomena (astro-ph.HE); Instrumentation and Methods for Astrophysics (astro-ph.IM).
Pagina del lavoro: https://arxiv.org/abs/2610.41229 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-03T05:39:03.453Z dalla pagina https://arxiv.org/list/astro-ph.IM/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).