Inferring additional physics through unmodelled signal reconstructions

Das, Rimo, Gayathri, V., Divyajyoti, Divyajyoti, Jose, Sijil, Bartos, Imre, Klimenko, Sergey and Kant Mishra, Chandra 2025. Inferring additional physics through unmodelled signal reconstructions. [Online]. arXiv. Available at: https://arxiv.org/abs/2412.11749

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Abstract

Parameter estimation of gravitational wave data is often computationally expensive, requiring simplifying assumptions such as circularisation of binary orbits. Although, if included, the sub-dominant effects like orbital eccentricity may provide crucial insights into the formation channels of compact binary mergers. To address these challenges, we present a pipeline strategy leveraging minimally modelled waveform reconstruction to identify the presence of eccentricity in real time. Using injected signals, we demonstrate that ignoring eccentricity (e20Hz≳0.1) leads to significant biases in parameter recovery, including chirp mass estimates falling outside the 90% credible interval. Waveform reconstruction shows inconsistencies increase with eccentricity, and this behaviour is consistent for different mass ratios. Our method enables low-latency inferences of binary properties supporting targeted follow-up analyses and can be applied to identify any physical effect of measurable strength.

Item Type:	Website Content
Date Type:	Submission
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	arXiv
Last Modified:	28 Feb 2025 15:18
URI:	https://orca.cardiff.ac.uk/id/eprint/176361

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