---
layout: pub-link
title: "qnm: A Python package for calculating Kerr quasinormal modes, separation constants, and spherical-spheroidal mixing coefficients"
modified:
categories: pubs
excerpt: "qnm is an open-source Python package for computing the Kerr quasinormal mode frequencies, angular separation constants, and spherical-spheroidal mixing coefficients."
tags: [black holes, code, general relativity, gravitational waves, gravity, perturbation theory, python, ringdown, scientific computing]
pub:
  authors: "Leo C. Stein"
  doi:
  arXiv: "1908.10377"
  jref: "Submitted to JOSS"
date: 2019-08-28
---

![]({{ site.url }}/images/example_22n.png)
{: .align-right style="width: 350px"}
> `qnm` is an open-source Python package for computing the Kerr
> quasinormal mode frequencies, angular separation constants, and
> spherical-spheroidal mixing coefficients. The `qnm` package includes
> a Leaver solver with the Cook-Zalutskiy spectral approach to the
> angular sector, and a caching mechanism to avoid repeating
> calculations. We provide a large cache of low $$\ell, m, n$$ modes,
> which can be downloaded and installed with a single function call,
> and interpolated to provide good initial guess for root-polishing at
> new values of spin.

---
layout: pub-link
title: "qnm: A Python package for calculating Kerr quasinormal modes, separation constants, and spherical-spheroidal mixing coefficients"
modified: 2019-10-01
categories: pubs
excerpt: "qnm is an open-source Python package for computing the Kerr quasinormal mode frequencies, angular separation constants, and spherical-spheroidal mixing coefficients."
tags: [black holes, code, general relativity, gravitational waves, gravity, perturbation theory, python, ringdown, scientific computing]
pub:
  authors: "Leo C. Stein"
  doi: "10.21105/joss.01683"
  arXiv: "1908.10377"
  jref: "J. Open Source Softw., 4(42), 1683 (2019)"
date: 2019-08-28
---

![]({{ site.url }}/images/example_22n.png)
{: .align-right style="width: 350px"}
> `qnm` is an open-source Python package for computing the Kerr
> quasinormal mode frequencies, angular separation constants, and
> spherical-spheroidal mixing coefficients. The `qnm` package includes
> a Leaver solver with the Cook-Zalutskiy spectral approach to the
> angular sector, and a caching mechanism to avoid repeating
> calculations. We provide a large cache of low $$\ell, m, n$$ modes,
> which can be downloaded and installed with a single function call,
> and interpolated to provide good initial guess for root-polishing at
> new values of spin.

Add jref and doi to qnm
Add jref and doi to qnm
