diff options
| author | Aaron LI <aly@aaronly.me> | 2017-07-31 22:10:56 +0800 |
|---|---|---|
| committer | Aaron LI <aly@aaronly.me> | 2017-07-31 22:10:56 +0800 |
| commit | 72c083a9f2ca8d0679ce21b0fce18a0aabff7eb1 (patch) | |
| tree | 167d151ef96a1ef717c52a1f582859897a216122 /fg21sim/utils/cosmology.py | |
| parent | 9929159a769e0575ff8654b840b4090c4495a8de (diff) | |
| download | fg21sim-72c083a9f2ca8d0679ce21b0fce18a0aabff7eb1.tar.bz2 | |
utils/cosmology.py: Add "dVc()": differential comoving volume
Signed-off-by: Aaron LI <aly@aaronly.me>
Diffstat (limited to 'fg21sim/utils/cosmology.py')
| -rw-r--r-- | fg21sim/utils/cosmology.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fg21sim/utils/cosmology.py b/fg21sim/utils/cosmology.py index a3c8574..d66de09 100644 --- a/fg21sim/utils/cosmology.py +++ b/fg21sim/utils/cosmology.py @@ -295,3 +295,11 @@ class Cosmology: if self._growth_factor0 is None: self._growth_factor0 = self.growth_factor(0) return self._growth_factor0 + + def dVc(self, z): + """ + Calculate the differential comoving volume. + + The dimensions is [Mpc^3]/[sr]/[unit redshift]. + """ + return self._cosmo.differential_comoving_volume(z).value |