ValleeSpiral¶

class gammapy.astro.population.ValleeSpiral[source]¶

Bases: gammapy.astro.population.LogSpiral

Milky way spiral arm model from Vallee (2008).

Reference: http://adsabs.harvard.edu/abs/2008AJ....135.1301V

Attributes Summary

`bar_radius`
`m`
`p`
`r_0`
`r_sun`
`spiralarms`
`theta_0`

Attributes Documentation

bar_radius = <Quantity 3.0 kpc>¶

m = 4¶

p = <Quantity 12.8 deg>¶

r_0 = <Quantity 2.1 kpc>¶

r_sun = <Quantity 7.6 kpc>¶

spiralarms = array(['Norma', 'Perseus', 'Carina Sagittarius', 'Crux Scutum'], dtype='<U18')¶

theta_0 = <Quantity -20.0 deg>¶