pint.derived_quantities.sini
- pint.derived_quantities.sini(mp: Quantity, mc: Quantity, pb: Quantity, x: Quantity) Quantity[source]
Post-Keplerian sine of inclination, assuming general relativity.
Can handle scalar or array inputs.
- Parameters:
mp (astropy.units.Quantity) – pulsar mass
mc (astropy.units.Quantity) – companion mass
pb (astropy.units.Quantity) – Binary orbital period
x (astropy.units.Quantity) – Semi-major axis, A1SINI, in units of
pint.ls
- Returns:
sini
- Return type:
- Raises:
astropy.units.UnitsError – If the input data are not appropriate quantities
TypeError – If the input data are not quantities
Notes
Calculates
\[\begin{split}s = T_{\\odot}^{-1/3} \\left(\\frac{P_b}{2\\pi}\\right)^{-2/3} \\frac{(m_p+m_c)^{2/3}}{m_c}\end{split}\]with \(T_\\odot = GM_\\odot c^{-3}\).
More details in Timing Models. Also see [11].