BlackHolePerturbationToolkit / KerrGeodesics

Code to compute quantities related to bound timelike Kerr geodesics
MIT License
27 stars 13 forks source link

Scattering angle in Kerr is wrong #52

Open MvdMeent opened 1 year ago

MvdMeent commented 1 year ago

There is a term missing from the expression for the scattering angle for Kerr orbits. It should be:

\[Phi]S = 2 \[CapitalUpsilon]\[Phi] \[Lambda]S+ \[Phi]r[\[CapitalUpsilon]r \[Lambda]S + qr0]- \[Phi]r[-\[CapitalUpsilon]r \[Lambda]S + qr0] + \[Phi]z[\[CapitalUpsilon]\[Theta] \[Lambda]S + qz0]- \[Phi]z[-\[CapitalUpsilon]\[Theta] \[Lambda]S + qz0]