2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3088We study the sensitivity of the sound speed to relativistic corrections of the equation of state (EOS) in the standard solar model by means of a helioseismic forward analysis. We use the latest GOLF/SOHO data for $\ell = 0,1,2,3$ modes to confirm that the inclusion of the relativistic corrections to the adiabatic exponent $Γ_1$ computed from both OPAL and MHD EOS leads to a more reliable theoretical modelling of the innermost layers of the Sun.3 pages, 3 figures, aa.cls, to appear on Astronomy and AstrophysicsAstrophysicstext