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arXiv · 2611.08880

A pipeline for identifying astrophysical signals and instrumental glitches in LISA data

Aryamann Rao·Jess McIver·Rhiannon Udall·Natalia Korsakova·Malvina Bellotti
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Abstract

The Laser Interferometer Space Antenna (LISA) is a space-based gravitational wave detector scheduled for launch in the 2030s by the European Space Agency. Operating in the 0.1 mHz to 0.1 Hz band, LISA will observe a variety of astrophysical sources including but not limited to supermassive black hole mergers, extreme mass ratio inspirals, and white dwarf binaries. LISA will yield new insights, including supermassive black hole formation, new tests of general relativity, population studies of white dwarfs and others. Like all interferometric gravitational wave detectors, LISA data is expected to contain non-astrophysical transients, commonly referred to as glitches. We introduce a two step pipeline that consists of a search algorithm for detecting potential transients in simulated LISA data followed by a machine learning model that classifies the detected transients as gravitational waves or instrumental glitches. This is important for MBHBs with very high masses (around $10^6\ M_{\odot}$) which are transients that could be morphologically similar to LISA glitches in the data. Initial results demonstrate a promising ability to classify detected events with an accuracy close to $98\%$. The pipeline also shows the ability to analyze a month of data in under 2 minutes on a laptop. This shows an eventual utility of our pipeline for enabling accurate rapid alerts from low latency searches. It could also support model selection in global-fit analyses by providing an initial summary of the location and type of individual signals. This paper also discusses challenges encountered during training, including limitations of the current framework.

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Aryamann Rao, Jess McIver, Rhiannon Udall, Natalia Korsakova, Malvina Bellotti. 2026-11-06. A pipeline for identifying astrophysical signals and instrumental glitches in LISA data. https://arxiv.org/abs/2611.08880

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