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Glitch systematics on the observation of massive black-hole binaries with LISA by Spadaro, Alice; Buscicchio, Riccardo; Vetrugno, Daniele; Klein, Antoine; Gerosa, Davide; Vitale, Stefano; Dolesi, Rita; Weber, William Joseph; Colpi, Monica is a scholarly article available to read on EtoBox.

What is Glitch systematics on the observation of massive black-hole binaries with LISA about?

Detecting and coherently characterizing thousands of gravitational-wave signals is a core data-analysis challenge for the Laser Interferometer Space Antenna (LISA). Transient artifacts, or "glitches", with disparate morphologies are expected to be present in the data, potentially affecting the scientific return of the mission. We present the first joint reconstruction of short-lived astrophysical signals and noise artifacts. Our analysis is inspired by glitches observed by the LISA Pathfinder mission, including both acceleration and fast displacement transients. We perform full Bayesian inference using LISA time-delay interferometric data and gravitational waveforms describing mergers of massive black holes. We focus on a representative binary with a detector-frame total mass of $6 \times 10^7 M_\odot$ at redshift $5$, yielding a signal lasting $\sim 30~\mathrm{h}$ in the LISA sensitivity band. We explore two glitch models of different flexibility, namely a fixed parametric family and a shapelet decomposition. In the most challenging scenario, we report a complete loss of the gravitational-wave signal if the glitch is ignored; more modest glitches induce biases on the black-hole pa

Author

Spadaro, Alice; Buscicchio, Riccardo; Vetrugno, Daniele; Klein, Antoine; Gerosa, Davide; Vitale, Stefano; Dolesi, Rita; Weber, William Joseph; Colpi, Monica

Published

2023

Language

EN