py21cmsense.conversions.dk_du

py21cmsense.conversions.dk_du(z: float | ~numpy.array, cosmo: ~astropy.cosmology.flrw.base.FLRW = FlatLambdaCDM(name="Planck15", H0=67.74 km / (Mpc s), Om0=0.3075, Tcmb0=2.7255 K, Neff=3.046, m_nu=[0.   0.   0.06] eV, Ob0=0.0486), approximate=False) → Quantity

Get factor converting bl length in wavelengths to h/Mpc.

Parameters:

z (float) – redshift

Notes

Valid for u >> 1