Near-surface effects and solar-age determination

TL;DR

This paper demonstrates that correcting solar model frequencies using an empirical power law improves the accuracy of solar age determination, aligning it with meteoritic ages, and compares different frequency separation methods.

Contribution

It introduces an empirical correction method for solar model frequencies and evaluates its effectiveness in solar age estimation compared to traditional ratios.

Findings

Corrected frequencies yield solar ages consistent with meteoritic data.

Empirical power law correction improves age determination accuracy.

Comparison shows the correction method aligns well with established ages.

Abstract

The dominant part of the difference between the observed and model frequencies of the Sun can be approximated by a power law. We show that when this empirical law is employed to correct the model frequencies and then the small frequency separations are used for solar age determination, the results are consistent with the meteoritic age (4.563 Gyr < t < 4.576 Gyr). We present the results and compare with those obtained by using the ratios of small to large frequency separations.