>>> from astropy.cosmology importWMAP9 ascosmo
>>>cosmo.H(0)
<Quantity 69.32 km / (Mpc s)>
>>>
>>> cosmo.kpc_proper_per_arcmin(3)
<Quantity 472.97709620405266 kpc / arcmin>
cosmo.luminosity_distance(0.23).value -----Mpc
A.value 得到不带单位的数字
TBD
clementinadoo 2018-09-13 16:23 原文
>>> from astropy.cosmology importWMAP9 ascosmo
>>>cosmo.H(0)
<Quantity 69.32 km / (Mpc s)>
>>>
>>> cosmo.kpc_proper_per_arcmin(3)
<Quantity 472.97709620405266 kpc / arcmin>
cosmo.luminosity_distance(0.23).value -----Mpc
A.value 得到不带单位的数字
TBD