↩ 🔵 🔵 🔵 ❪∂_❫ High-Energy Astrophysics Subs ○ ❪∂₌❫ Astronomical Formulations ○ Channel Error (σ₍I₎≈√C₍I₎) ○￩ Chi-Squared (χ²=Σ₍C₍I₎-Cₚ₍I₎₎²∕σ₍I₎²) ○￩ᴴᴱᴬ Dimensionless Spin (a∗=a∕R𝘨) ○￩ diskbb-norm (₍R𝘪𝘯∕D₁₀₎²cos₍i₎) ○￩ Hardness Ratio (HR=₍C₂-C₁₎∕₍C₂+C₁₎) ○￩ Mass Function (f₍M₎≡P𝘰𝘳𝘣K₂³∕2πG=M₁sin³i∕₍1+q₎²) ○￩ Mass Ratio (q≡M₂∕M₁) ○￩ Observed Counts (C₍I₎=∫f₍E₎⋅R₍I,E₎⋅dE) ○￩