ValleeSpiral#

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

Bases: LogSpiral

Milky way spiral arm model from Vallee (2008).

Reference: https://ui.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. 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. deg>#

__init__()[source]#

classmethod __new__(*args, **kwargs)#