SimplePulsar¶

class gammapy.astro.source.SimplePulsar(P, P_dot, I=<Quantity 1.e+45 cm2 g>, R=<Quantity 1000000. cm>)[source]¶

Magnetic dipole spin-down model for a pulsar.

Parameters:

Rotation period (sec)

P_dot : Quantity

Rotation period derivative (sec sec^-1)

Moment of inertia (g cm^2)

Radius of the pulsar (cm)

Attributes Summary

`luminosity_spindown`	Spin-down luminosity (`Quantity`).
`magnetic_field`	Magnetic field strength at the polar cap (`Quantity`).
`tau`	Characteristic age (`Quantity`).

Attributes Documentation

luminosity_spindown¶

Spin-down luminosity (Quantity).

Notes

The spin-down luminosity is given by:

\[\dot{L} = 4\pi^2 I \frac{\dot{P}}{P^{3}}\]

magnetic_field¶

Magnetic field strength at the polar cap (Quantity).

Notes

The magnetic field is given by:

\[B = 3.2\cdot 10^{19} (P\dot{P})^{1/2} [\textnormal(Gauss)]\]

tau¶

Characteristic age (Quantity).

Notes

The characteristic age is given by:

\[\tau = \frac{P}{2\dot{P}}\]