A New Gravitational Model Incorporating Pressure Effects: Numerical Analysis Across Celestial Bodies

This paper presents a revised gravitational field model incorporating internal pressure components—including hydrostatic, rotational, and radiative pressures—in the computation of surface gravitational acceleration. Using real data from planets, the Sun, neutron stars, and galaxies, the influence of internal pressure on gravitational acceleration is quantified and compared with classical values. Results demonstrate that the modified model explains certain observed deviations in gravitational measurements and may provide insights into dark matter effects on galactic scales.