utils/cosmology: Add methods DL() and DA()

1 files changed, 14 insertions, 0 deletions

diff --git a/fg21sim/utils/cosmology.py b/fg21sim/utils/cosmology.py
index 12e581a..906f7d8 100644
--- a/fg21sim/utils/cosmology.py
+++ b/fg21sim/utils/cosmology.py
@@ -75,6 +75,20 @@ class Cosmology:
         """
         return self.H0 * self.E(z)
 
+    def DL(self, z):
+        """
+        Luminosity distance at redshift z.
+        Unit: [Mpc]
+        """
+        return self._cosmo.luminosity_distance(z).value
+
+    def DA(self, z):
+        """
+        Angular diameter distance at redshift z.
+        Unit: [Mpc]
+        """
+        return self._cosmo.angular_diameter_distance(z).value
+
     @property
     def hubble_time(self):
         """