yaw.core.cosmology.r_kpc_to_angle#

yaw.core.cosmology.r_kpc_to_angle(r_kpc: NDArray[np.float64] | Sequence[float], z: float, cosmology: TypeCosmology) → NDArray[np.float64][source]#

Convert from a physical separation in kpc to angles in radian at a given redshift.

Parameters:

  • r_kpc (NDArray, number) – Physical separation in kpc.

  • z (float) – Redshift at which conversion happens.

  • cosmology (astropy.cosmology.FLRW, CustomCosmology) – Cosmological model used for calculations.

Returns:

Angular separation at given redshift.

Return type:

NDArray

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