This study presents a simple and effective mathematical model to describe galaxy rotation curves. The proposed model uses only two parameters — maximum velocity (Vmax) and scale radius (Rs) — and successfully fits observed galaxy rotation data with low error (<5%). Additionally, a power-law relation between Vmax and Rs is observed: Vmax ∝ Rs⁰. 45 This result suggests a fundamental scaling relationship between galaxy size and rotational velocity.
hardik Thakor (Wed,) studied this question.