2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/215970We analyze the rotation curves of 10 spiral galaxies with a newtonian potential corrected with an extra logarithmic term, using a disc modelization for the spiral galaxies. There is a new constant associated with the extra term in the potential. The rotation curve of the chosen sample of spiral galaxies is well reproduced for a given range of the new constant. It is argued that this correction can have its origin from string configurations. The compatibility of this correction with local physics is discussed.Latex file, 6 pages, 20 figuresAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext