ESIGMAHM: an eccentric, spinning inspiral-merger-ringdown waveform model with higher modes for the detection and characterization of binary black holes

Paul, Kaushik, Maurya, Akash, Henry, Quentin, Sharma, Kartikey, Satheesh, Pranav, Divyajyoti, Divyajyoti, Kumar, Prayush and Mishra, Chandra Kant 2024. ESIGMAHM: an eccentric, spinning inspiral-merger-ringdown waveform model with higher modes for the detection and characterization of binary black holes. [Online]. Cornell University. Available at: https://doi.org/10.48550/arXiv.2409.13866

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Abstract

We present a time-domain inspiral-merger-ringdowm (IMR) waveform model ESIGMAHM constructed within a framework we named ESIGMA for coalescing binaries of spinning black holes on moderately eccentric orbits (Huerta et al. (2018) [Phys. Rev. D 97, 024031]). We now include the effect of black hole spins on the dynamics of eccentric binaries, as well as model sub-dominant waveform harmonics emitted by them. The inspiral evolution is described by a consistent combination of latest results from post-Newtonian theory, self-force, and black hole perturbation theory. We assume that these moderately eccentric binaries radiate away most of their orbital eccentricity before merger, and seamlessly connect the eccentric inspiral with a numerical relativity based surrogate waveform model for mergers of spinning binaries on quasi-circular orbits. We validate ESIGMAHM against eccentric Numerical Relativity simulations, and also against contemporary effective-one-body and phenomenological models in the quasi-circular limit. We find that ESIGMAHM achieves match values greater than 99% for quasi-circular spin-aligned binaries with mass ratios up to 8, and above 97% for non-spinning and spinning eccentric systems with small or positively aligned spins. Using IMRESIGMA, we quantify the impact of orbital eccentricity on GW signals, showing that next-generation detectors can detect eccentric sources up to 10% louder than quasi-circular ones. We also show that current templated LIGO-Virgo searches will lose more than 10% of optimal SNR for about 20% of all eccentric sources by using only quasi-circular waveform templates. The same will result in a 25% loss in detection rate for eccentric sources with mass ratios m1/m2≥4. Our results highlight the need for including eccentricity and higher-order modes in GW source models and searches for asymmetric eccentric BBH signals.

Item Type:	Website Content
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Cornell University
ISSN:	2331-8422
Last Modified:	24 Oct 2024 15:40
URI:	https://orca.cardiff.ac.uk/id/eprint/172770

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