Pulsar¶
-
class
gammapy.astro.source.
Pulsar
(P_0='0.1 s', B='1e10 G', n=3, I=<Quantity 1.e+45 cm2 g>, R=<Quantity 1000000. cm>, age=None, L_0=None)[source]¶ Bases:
object
Magnetic dipole spin-down pulsar model.
Reference: http://www.cv.nrao.edu/course/astr534/Pulsars.html
- Parameters
- P_0float
Period at birth
- B
Quantity
Magnetic field strength at the poles (Gauss)
- nfloat
Spin-down braking index
- Ifloat
Moment of inertia
- Rfloat
Radius
Methods Summary
energy_integrated
(self, t)Total energy released by a given time.
luminosity_spindown
(self, t)Spin down luminosity.
magnetic_field
(self, t)Magnetic field at polar cap (assumed constant).
period
(self, t)Rotation period.
period_dot
(self, t)Period derivative at age t.
tau
(self, t)Characteristic age at real age t.
Methods Documentation
-
energy_integrated
(self, t)[source]¶ Total energy released by a given time.
Time-integrated spin-down luminosity since birth.
E(t)=˙L0τ0tt+τ0- Parameters
- t
Quantity
Time after birth of the pulsar.
- t
-
luminosity_spindown
(self, t)[source]¶ Spin down luminosity.
˙L(t)=˙L0(1+tτ0)−n+1n−1- Parameters
- t
Quantity
Time after birth of the pulsar
- t
-
magnetic_field
(self, t)[source]¶ Magnetic field at polar cap (assumed constant).
B=3.2⋅1019(P˙P)1/2 Gauss- Parameters
- t
Quantity
Time after birth of the pulsar.
- t
-
period
(self, t)[source]¶ Rotation period.
P(t)=P0(1+tτ0)1n−1- Parameters
- t
Quantity
Time after birth of the pulsar
- t