py21cmsense.conversions.dL_dth¶

py21cmsense.conversions.dL_dth(z: float | np.array, cosmo: FLRW = FlatLambdaCDM(name='Planck15', H0=<Quantity 67.74 km / (Mpc s)>, Om0=0.3075, Tcmb0=<Quantity 2.7255 K>, Neff=3.046, m_nu=<Quantity [0., 0., 0.06] eV>, Ob0=0.0486), approximate=False) → un.Quantity[un.Mpc / un.rad / littleh][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)