caput.astro.coordinates.bessel

Spherical Bessel function and derivatives.

Although these functions are available in scipy, they tend to be inaccurate at large values of l.

Functions

jl(l, z)	A fast spherical bessel function using approximations at low- and high-z.
jl_d(l, z)	First derivative of jl.
jl_d2(l, z)	Second derivative of jl.