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authorAaron LI <aly@aaronly.me>2017-10-18 15:52:34 +0800
committerAaron LI <aly@aaronly.me>2017-10-18 15:52:34 +0800
commit3dadf7b53f28af00f3170a10629c91e8d2888e0e (patch)
treef6201f962178ce4dfcfb45156a995dd0b541d71f /fg21sim/utils
parent4c45544689f2d24bac2be9ec37f4d1b0e9320365 (diff)
downloadfg21sim-3dadf7b53f28af00f3170a10629c91e8d2888e0e.tar.bz2
utils/units.py: add "rad2arcmin" and some cleanup/simplifications
Diffstat (limited to 'fg21sim/utils')
-rw-r--r--fg21sim/utils/units.py36
1 files changed, 20 insertions, 16 deletions
diff --git a/fg21sim/utils/units.py b/fg21sim/utils/units.py
index b83bd02..dfe5013 100644
--- a/fg21sim/utils/units.py
+++ b/fg21sim/utils/units.py
@@ -21,7 +21,7 @@ class Units:
"""
# Unit for electron momentum (p), thus its value is the Lorentz factor
# Unit: [g cm / s]
- mec = ac.m_e.cgs.value*ac.c.cgs.value
+ mec = ac.m_e.cgs.value * ac.c.cgs.value
# Energy of a still electron
# Unit: [erg]
mec2 = (ac.m_e * ac.c**2).to(au.erg).value
@@ -36,42 +36,46 @@ class UnitConversions:
"""
# Mass
Msun2g = au.solMass.to(au.g)
- g2Msun = au.g.to(au.solMass)
+ g2Msun = 1.0 / Msun2g
# Time
Gyr2s = au.Gyr.to(au.s)
- s2Gyr = au.s.to(au.Gyr)
+ s2Gyr = 1.0 / Gyr2s
# Length
kpc2m = au.kpc.to(au.m)
- m2kpc = au.m.to(au.kpc)
+ m2kpc = 1.0 / kpc2m
Mpc2m = au.Mpc.to(au.m)
- m2Mpc = au.m.to(au.Mpc)
+ m2Mpc = 1.0 / Mpc2m
kpc2cm = au.kpc.to(au.cm)
- cm2kpc = au.cm.to(au.kpc)
+ cm2kpc = 1.0 / kpc2cm
Mpc2cm = au.Mpc.to(au.cm)
- cm2Mpc = au.cm.to(au.Mpc)
+ cm2Mpc = 1.0 / Mpc2cm
Mpc2km = au.Mpc.to(au.km)
- km2Mpc = au.km.to(au.Mpc)
+ km2Mpc = 1.0 / Mpc2km
kpc2km = au.kpc.to(au.km)
- km2kpc = au.km.to(au.kpc)
+ km2kpc = 1.0 / kpc2km
km2cm = au.km.to(au.cm)
+ cm2km = 1.0 / km2cm
# Energy
keV2erg = au.keV.to(au.erg)
+ erg2keV = 1.0 / keV2erg
# Angle
rad2deg = au.rad.to(au.deg)
- deg2rad = au.deg.to(au.rad)
+ deg2rad = 1.0 / rad2deg
rad2arcsec = au.rad.to(au.arcsec)
- arcsec2rad = au.arcsec.to(au.rad)
- arcmin2deg = au.arcmin.to(au.deg)
+ arcsec2rad = 1.0 / rad2arcsec
+ rad2arcmin = au.rad.to(au.arcmin)
+ arcmin2rad = 1.0 / rad2arcmin
deg2arcmin = au.deg.to(au.arcmin)
- arcsec2deg = au.arcsec.to(au.deg)
+ arcmin2deg = 1.0 / deg2arcmin
deg2arcsec = au.deg.to(au.arcsec)
+ arcsec2deg = 1.0 / deg2arcsec
arcmin2arcsec = au.arcmin.to(au.arcsec)
- arcsec2arcmin = au.arcsec.to(au.arcmin)
+ arcsec2arcmin = 1.0 / arcmin2arcsec
# Temperature
eV2K = au.eV.to(ac.k_B*au.K)
- K2eV = 1 / eV2K
+ K2eV = 1.0 / eV2K
keV2K = au.keV.to(ac.k_B*au.K)
- K2keV = 1 / keV2K
+ K2keV = 1.0 / keV2K
class Constants: