qnm
swMATH ID:  30108 
Software Authors:  Leo C. Stein 
Description:  qnm is an opensource Python package for computing the Kerr quasinormal mode frequencies, angular separation constants, and sphericalspheroidal mixing coefficients. The qnm package includes a Leaver solver with the CookZalutskiy spectral approach to the angular sector, and a caching mechanism to avoid repeating calculations. With this python package, you can compute the QNMs labeled by different (s,l,m,n), at a desired dimensionless spin parameter 0≤a<1. The angular sector is treated as a spectral decomposition of spinweighted spheroidal harmonics into spinweighted spherical harmonics. Therefore you get the sphericalspheroidal decomposition coefficients for free when solving for ω and A (see below for details). We have precomputed a large cache of lowlying modes (s=2 and s=1, all l<8, all n<7). These can be automatically installed with a single function call, and interpolated for good initial guesses for rootfinding at some value of a. 
Homepage:  https://qnm.readthedocs.io/en/latest/README.html 
Source Code:  https://github.com/duetosymmetry/qnm 
Dependencies:  Python 
Keywords:  Quantum Cosmology; arXiv_grqc; Astrophysics; arXiv_astroph.IM; Python; JOSS; quasinormal modes; QNMs; black holes; Kerr 
Related Software:  QuasiNormalModes; Mathematica; Julia; QuasinormalModes.jl; Numba; SciPy; NumPy; Python 
Cited in:  0 Publications 
Standard Articles
1 Publication describing the Software  Year 

qnm: A Python package for calculating Kerr quasinormal modes, separation constants, and sphericalspheroidal mixing coefficients Leo C. Stein 
2019
