pint.derived_quantities.shklovskii_factor
- pint.derived_quantities.shklovskii_factor(pmtot: Unit('mas / yr'), D: Unit('kpc'))[source]
Compute magnitude of Shklovskii correction factor.
Computes the Shklovskii correction factor, as defined in Eq 8.12 of Lorimer & Kramer (2005) [10] This is the factor by which \(\dot P /P\) is increased due to the transverse velocity. Note that this affects both the measured spin period and the orbital period. If we call this Shklovskii acceleration \(a_s\), then
\[\dot P_{\rm intrinsic} = \dot P_{\rm observed} - a_s P\]- Parameters:
pmtot (astropy.units.Quantity) – typically units of u.mas/u.yr Total proper motion of the pulsar \(\mu\) (system)
D (astropy.units.Quantity) – typically in units of u.kpc or u.pc Distance to the pulsar
- Returns:
acceleration – Shklovskii acceleration
- Return type:
Notes