Einasto lens

init_EinastoLens(D_d::Real = NaN, 
                 x_c::Real = 0.0, 
                 y_c::Real = 0.0, 
                 k_s::Real = NaN, 
                 x_s::Real = NaN, 
                 n::Real   = 0.2)

Initialize an Einasto lens with the given parameters. The lens model can be initialized with either the concentration c or the scale radius x_s. If both are provided, c will be used to calculate x_s and the input x_s will be overwritten. The parameter n defines the slope of the density profile.

Arguments

• cosmology::AbstractCosmology: Cosmology object.
• z_d::Real: Redshift of the lens.

Keyword Arguments

• x_c::Real = 0.0: x-coordinate of the lens (in $\rm \mathbf{arcseconds}$).
• y_c::Real = 0.0: y-coordinate of the lens (in $\rm \mathbf{arcseconds}$).
• mass::Real= NaN: Mass of the lens (in $\rm \mathbf{M_\odot}$).
• x_s::Real = NaN: Scale radius (in $\rm \mathbf{arcseconds}$).
• c::Real = NaN: Concentration of the lens.
• n::Real = 0.2: Slope parameter of the lens.

potential!(ψ::U, θx::S, θy::S, D_d::T, θxc::T, θyc::T, k_s::T, θs::T, n::T) where {U<:Real, S<:Real, T<:Real}

potential!(ψ::U, θx::S, θy::S, D_d::T, θxc::T, θyc::T, k_s::T, θs::T, n::T) where {U<:ROA, S<:ROA, T<:Real}

deflection!(ψx::U, ψy::U, θx::S, θy::S, D_d::T, θxc::T, θyc::T, k_s::T, θs::T, n::T) where {U<:Real, S<:Real, T<:Real}

deflection!(ψx::U, ψy::U, θx::S, θy::S, D_d::T, θxc::T, θyc::T, k_s::T, θs::T, n::T) where {U<:ROA, S<:ROA, T<:Real}

jacobian!(ψxx::U, ψyy::U, ψxy::U, θx::S, θy::S, D_d::T, θxc::T, θyc::T, k_s::T, θs::T, n::T) where {U<:Real, S<:Real, T<:Real}

jacobian!(ψxx::U, ψyy::U, ψxy::U, θx::S, θy::S, D_d::T, θxc::T, θyc::T, k_s::T, θs::T, n::T) where {U<:ROA, S<:ROA, T<:Real}