Sensitivity of low frequency oscillations to updated solar models

A large number of acoustic frequencies have already been detected, leading to a "seismic" model of the Sun rather close to the actual standard solar m odels. The core however is not yet well constrained by these observations a nd frequencies of low degree, low frequency modes which penetrate deeply in to the solar core are needed. We present here a study on the sensitivity of low degree low frequency (50 - 900 mu Hz) modes to the structure of the so lar interior, in order to help their detection and identification in the lo w frequency spectrum observed by SoHO experiments like VIRGO and GOLF The f requencies of p and g modes have been computed for a set of solar models wi th updated physics (Morel et al., 1997). We analyze their sensitivity to so lar parameters like age and metallicity, and to various physical processes, like convective core overshoot and mass loss during the beginning of solar evolution.