py21cmsense.conversions.X2Y¶

py21cmsense.conversions.X2Y(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 ** 3 / littleh ** 3 / un.steradian / un.MHz][source]¶

Obtain the conversion factor between observing co-ordinates and cosmological volume.

Parameters:

z (float) – Redshift
cosmo (astropy.cosmology.FLRW instance) – A cosmology.

Returns:

astropy.Quantity (the conversion factor. Units are Mpc^3/h^3 / (sr MHz).)