Seminário Geral: The Sun as a laboratory for fundamental physics

Sobre este evento

The idea that the Sun can be considered a laboratory for fundamental
physics traces back to the early developments in nuclear physics by
contributing to the understanding of the basic nuclear processes
involved in stellar nucleosynthesis. In recent times, accurate
measurements of acoustic p-mode spectrum combined with inversion
techniques have further stressed this role. In this talk I shall
discuss new helioseismic tests of basic physics and in particular the
possibility of constraining possible secular variation of the
gravitational constant G.  Using the most recent low-l BISON data, it
wil be shown that models with variable G significantly outclass models
with no secular variation of G, viz by a Bayes factor exceeding 30.

Ref: arXiv:1707.01866, and A&A 2015, 580, 130B.