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compute_dm_flux

gammapy.astro.darkmatter.compute_dm_flux(jfact, prim_flux, x_section, energy_range)

Create dark matter flux maps.

The gamma-ray flux is computed as follows:

$$\frac{\mathrm d \phi}{\mathrm d E \mathrm d\Omega} = \frac{\langle \sigma\nu \rangle}{8\pi m^2_{\mathrm{DM}}} \frac{\mathrm d N}{\mathrm dE} \times J(\Delta\Omega)$$

Parameters:

jfact : Quantity

J-Factor as computed by JFactory

prim_flux : PrimaryFlux

Primary gamma-ray flux

x_section : Quantity

Velocity averaged annihilation cross section, $\langle \sigma\nu\rangle$

energy_range : tuple of Quantity

Energy range for the map

Returns:

flux : Quantity

DM Flux

References

• 2011JCAP…03..051