Helioseismic limit on heavy element abundance

Details Helioseismic limit on heavy element abundance Helioseismic limit on heavy element abundance

2002-09-08

arxiv.org/abs/astro-ph/0209134v1

Astron.Astrophys.393:L95-L98,2002

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in Astron. Astrophys

Scientific paper

10.1051/0004-6361:20021253

Primary inversions of accurately measured solar oscillation frequencies coupled with the equations of thermal equilibrium and other input physics, enable us to infer the temperature and hydrogen abundance profiles inside the Sun. These profiles also help in setting constraints on the input physics as well as on heavy element abundance in the solar core. Using different treatments of plasma screening for nuclear reaction rates, limits on the cross-section of proton-proton nuclear reaction as a function of heavy element abundance in the solar core are obtained and an upper limit on heavy element abundance in the solar core is also derived from these results.

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