Scale Carrick field

scripts/field_los.py

@@ -130,7 +130,20 @@ def get_field(simname, nsim, kind, MAS, grid):
             return np.load(fpath).astype(np.float32)
         elif kind == "velocity":
             fpath = join(folder, "twompp_velocity_carrick2015.npy")
-            return np.load(fpath).astype(np.float32)
+            field = np.load(fpath).astype(np.float32)
+
+            # Because the Carrick+2015 data is in the following form:
+            # "The velocities are predicted peculiar velocities in the CMB
+            # frame in Galactic Cartesian coordinates, generated from the
+            # \(\delta_g^*\) field with \(\beta^* = 0.43\) and an external
+            # dipole \(V_\mathrm{ext} = [89,-131,17]\) (Carrick et al Table 3)
+            # has already been added.""
+            field[0] -= 89
+            field[1] -= -131
+            field[2] -= 17
+            field /= 0.43
+
+            return field
         else:
             raise ValueError(f"Unknown field kind: `{kind}`.")
     else: