marcumQ

This is a scipy wrapper to evaluate the generalized Marcum-Q function:

For properties and applications see:

• wikipedia.org/wiki/Marcum_Q-function
• mathworld.wolfram.com/MarcumQ-Function.html

Ours is a straightforward implementation that simply converts the relevant conventions from scipy.stats.ncx2; please see Appendix A in Gerosa and Bellotti (2023).

Install this package with pip install marcumq and then use it with:

import marcumq
marcumq.marcumq(nu=1,a=1.5,b=2.5)

If you use this code, it would be great if you could cite our paper:

• Quick recipes for gravitational-wave selection effects. Davide Gerosa, Malvina Bellotti. Classical and Quantum Gravity 41 (2024) 125002, arXiv:2404.16930 [astro-ph.HE]