Multimode ringdown modelling with $\texttt{qnmfits}$ and $\texttt{KerrRingdown}$
Lorena Maga\~na Zertuche, Leda Gao, Eliot Finch, and Gregory B. Cook
TL;DR
This paper introduces two verified algorithms, qnmfits and KerrRingdown, for extracting quasinormal mode amplitudes from black hole merger ringdown waveforms, aiding in gravitational wave analysis.
Contribution
It presents two new fitting algorithms for quasinormal mode extraction, validated against each other, enhancing analysis tools for black hole ringdown signals.
Findings
Algorithms verified against each other
Effective extraction of quasinormal mode amplitudes
Tools available in Python and Mathematica
Abstract
In the last decade, the ringdown community has made large strides in understanding the aftermath of binary black hole mergers through the study of numerical simulations. In this note, we introduce two flavors of fitting algorithms, that have been verified against each other, for the extraction of quasinormal mode amplitudes from ringdown waveforms - in Python and in Mathematica.
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Theoretical and Computational Physics