↩ 🔵 🔵 🔵 ❪𝛿’❫⁺ Spectral Fitting Parameters ○ ❪∂_❫ Relativistic Subs ○ kerrbb ⚬ˣˢᵖᵉᶜ kerrbb2 ⚬ˣˢᵖᵉᶜ Spin (a) ○◂ Dimensionless Spin (a∗=a∕R𝘨) ○￩