From 4f1b9b0cc8828cb81fb2cfee89b5153cc7ace0ae Mon Sep 17 00:00:00 2001
From: Aaron LI <aly@aaronly.me>
Date: Sat, 21 Oct 2017 15:17:01 +0800
Subject: clusters/halo: Add function "speed_sound()"

Also add "gamma" the adiabatic index of ideal gas to utils/units.py
---
 fg21sim/utils/units.py | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'fg21sim/utils/units.py')

diff --git a/fg21sim/utils/units.py b/fg21sim/utils/units.py
index dfe5013..e7deb17 100644
--- a/fg21sim/utils/units.py
+++ b/fg21sim/utils/units.py
@@ -100,3 +100,6 @@ class Constants:
     # Mean molecular weight
     # Ref.: Ettori et al, 2013, Space Science Review, 177, 119-154, Eq.(6)
     mu = 0.6
+
+    # Adiabatic index of ideal monatomic gas
+    gamma = 5.0/3.0
-- 
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