implement omega gamma (#7)

Signed-off-by: nstarman <nathanielstarkman@gmail.com>
cosmology-api · May 14, 2023 · 7caacf4 · 7caacf4
1 parent fe97beb
commit 7caacf4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/cosmology/compat/classy/_standard.py b/src/cosmology/compat/classy/_standard.py
@@ -187,7 +187,7 @@ def Omega_gamma0(self) -> NDFloating:
 
     def Omega_gamma(self, z: InputT, /) -> NDFloating:
         """Redshift-dependent photon density parameter."""
-        raise NotImplementedError
+        return self.Omega_gamma0 * (z + 1.0) ** 4 / self.h_over_h0(z) ** 2
 
     # ----------------------------------------------
     # HasCriticalDensity