py21cmsense.conversions.dL_dth¶

py21cmsense.conversions.dL_dth(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[source]¶

Return the factor to convert radians to transverse distance at redshift z.

Parameters:: z (float) – The redshift
Returns:: astropy.Quantity (the factor (in Mpc/h/radian) which converts from an angle) – to a transverse distance.

Notes

From Furlanetto et al. (2006)