Author(s)

José Luis Garrido Pestaña

Departamento de Física, Universidad de Jaén, Campus Las Lagunillas, Jaén, España.

By adding an extra term to the Newtonian potential, matter outside the orbit of a star adds to the gravitational acceleration acting on that star. In this work, we solve the Poisson equation for non-Newtonian potentials of a spherically symmetric distribution of mass. We derive equations for calculating the centripetal acceleration and velocity of galactic disk stars that are due to the Newtonian and exponential potentials of the galaxy’s central bulge.

Galaxies: Kinematics and Dynamics, Gravitation, General Physics (Physics Education)

Pestaña, J. (2023) The Yukawa and Exponential Potentials for a Galaxy’s Spherical Central Bulge*. Journal of Modern Physics, 14, 1755-1761. doi: 10.4236/jmp.2023.1413104.