init_aHernquistLens(D_d::RV=NaN, x_c::RV=0.0, y_c::RV=0.0, mass::RV=NaN, x_s::RV=NaN, eps::RV=NaN, pa::RV=NaN)

Initialize an approximate Hernquist lens (aHernquistLens) with the given parameters based on Oguri (2021).

potential!(ψ::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass:: RV, θs::RV, ϵ::RV, pa::RV) where T <: RV

potential!(ψ::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass:: RV, θs::RV, ϵ::RV, pa::RV) where T <: ROA

deflection!(ψx::T, ψy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass:: RV, θs::RV, ϵ::RV, pa::RV) where T <: RV

deflection!(ψx::T, ψy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass:: RV, θs::RV, ϵ::RV, pa::RV) where T <: ROA

jacobian!(ψxx::T, ψyy::T, ψxy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass:: RV, θs::RV, ϵ::RV, pa::RV) where T <: RV

jacobian!(ψxx::T, ψyy::T, ψxy::T, θx::T, θy::T, D_d::RV, θxc::RV, θyc::RV, mass:: RV, θs::RV, ϵ::RV, pa::RV) where T <: ROA