Multimode ringdown modelling with $\texttt{qnmfits}$ and $\texttt{KerrRingdown}$

Lorena Magaña Zertuche; Leda Gao; Eliot Finch; Gregory B. Cook

Multimode ringdown modelling with $\texttt{qnmfits}$ and $\texttt{KerrRingdown}$

General Relativity and Quantum Cosmology 2025-02-06 v1 Instrumentation and Methods for Astrophysics

Authors: Lorena Magaña Zertuche , Leda Gao , Eliot Finch , Gregory B. Cook

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 - $\texttt{qnmfits}$ in Python and $\texttt{KerrRingdown}$ in Mathematica.

Keywords

quasinormal modes

Cite

@article{arxiv.2502.03155,
  title  = {Multimode ringdown modelling with $\texttt{qnmfits}$ and $\texttt{KerrRingdown}$},
  author = {Lorena Magaña Zertuche and Leda Gao and Eliot Finch and Gregory B. Cook},
  journal= {arXiv preprint arXiv:2502.03155},
  year   = {2025}
}

Comments

7+2 pages, 2 figures. Software packages are available through (qnmfits) https://doi.org/10.5281/zenodo.14806974 and (KerrRingdown) https://doi.org/10.5281/zenodo.14804284

Multimode ringdown modelling with $\texttt{qnmfits}$ and $\texttt{KerrRingdown}$

Abstract

Keywords

Cite

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