Improve descriptions and minor cleanups

3 files changed, 14 insertions, 17 deletions

diff --git a/fg21sim/extragalactic/clusters/formation.py b/fg21sim/extragalactic/clusters/formation.py
index 524237c..7d7b9a2 100644
--- a/fg21sim/extragalactic/clusters/formation.py
+++ b/fg21sim/extragalactic/clusters/formation.py
@@ -172,16 +172,15 @@ class ClusterFormation:
         Parameters
         ----------
         main_only : bool, optional
-            Whether to only trace the forming history of the main
-            halo/cluster.
-            (default: True)
+            Whether to only trace the forming history of the main cluster.
+            Default: True
 
         References: Ref.[randall2002],Sec.(3.1)
         """
         logger.debug("Simulating cluster formation: " +
                      "M0=%.3e[Msun] " % self.M0 +
-                     "from z={:.3f} back to z={zmax} ...".format(
-                         self.z0, zmax=self.zmax))
+                     "from z={z0:.3f} back to z={zmax} ...".format(
+                         z0=self.z0, zmax=self.zmax))
         self.main_only = main_only
         if main_only:
             logger.debug("Only trace the formation of the *main* cluster ...")
diff --git a/fg21sim/extragalactic/clusters/halo.py b/fg21sim/extragalactic/clusters/halo.py
index 1da89b3..cd6b9bc 100644
--- a/fg21sim/extragalactic/clusters/halo.py
+++ b/fg21sim/extragalactic/clusters/halo.py
@@ -656,7 +656,7 @@ class RadioHalo:
         omega = np.pi * self.angular_radius**2  # [arcsec^2]
         if pixelsize and (omega < pixelsize**2):
             omega = pixelsize ** 2  # [arcsec^2]
-            logger.warning("Object size < 1 pixel; force to be 1 pixel!")
+            logger.warning("Halo size < 1 pixel; force to be 1 pixel!")
 
         Tb = Fnu_to_Tb(flux, omega, frequencies)  # [K]
         return Tb
@@ -801,8 +801,6 @@ class RadioHalo:
         So we assume that the main cluster grows linearly in time from
         (M_main, z_merger) to (M_obs, z_obs).
 
-        TODO: consider the full merging history.
-
         Parameters
         ----------
         t : float
diff --git a/fg21sim/extragalactic/clusters/main.py b/fg21sim/extragalactic/clusters/main.py
index b704938..0251662 100644
--- a/fg21sim/extragalactic/clusters/main.py
+++ b/fg21sim/extragalactic/clusters/main.py
@@ -2,14 +2,14 @@
 # MIT license
 
 """
-Simulate the extended radio emissions from galaxy clusters due to
-merger-induced turbulence and/or shock accelerations,
-e.g., (giant) radio halos, (elongated double) radio relics.
+Simulate the diffuse radio emissions from galaxy clusters due to
+merger-induced turbulence and/or shock accelerations, e.g.,
+(giant) radio halos, (elongated double) radio relics.
 
 NOTE
 ----
-There are other types of extended radio emissions not considered
-yet, e.g., mini-halos, roundish radio relics, etc.
+There are other types of diffuse radio emissions not considered
+yet, e.g., mini-halos, roundish radio relics.
 """
 
 import os
@@ -36,13 +36,13 @@ logger = logging.getLogger(__name__)
 
 class GalaxyClusters:
     """
-    Simulate the extended radio emissions from the galaxy clusters.
+    Simulate the diffuse radio emissions from the galaxy clusters.
 
     NOTE
     ----
-    Currently, only the *giant radio halos* are considered, while
-    other types of extended emissions are missing, e.g., mini-halos,
-    elongated relics, roundish relics.
+    Currently only implement the *giant radio halos*, while other types
+    of diffuse emissions are missing, e.g., mini-halos, elongated relics,
+    roundish relics.
 
     Attributes
     ----------