Speaker
Dr
Regner Trampedach
(Space Science Institute)
Description
Is the Sun likely to have a more opaque interior than previously thought?
The solar oxygen- (or abundance-) problem can be solved with higher interior opacities, reconciling abundance analysis based on 3D convective atmospheres, with the helioseismic structure of the solar interior. This has been known for more than a decade. But last year we learned that the absorption by just iron, contributes 7% more to the solar opacity at the bottom of its convection zone, than predicted by any opacity calculation so far, and by OP`05 in particular.
I show, that artificial changes to the absorption (calibrated against the iron experiment) by other elements in a solar mixture OP`05 opacity, gives the shape and magnitude of change that can restore agreement between modern abundance analysis and helioseismology.
This suggests that improved opacity calculations will solve the solar oxygen problem.`
Primary author
Dr
Regner Trampedach
(Space Science Institute)
