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Stars as physics laboratories: from dark matter to modified gravity

Jordi Casanellas
Instituto Superior Técnico

Abstract
The present accuracy in the modelling and observations of the Sun and other stars allows us to use them as laboratories of physics. In this talk I will discuss how the capture of dark matter particles by low-mass stars may impact the properties of individual stars and the global characteristics of stellar clusters. I will present recent constraints on the dark matter parameter space from an asteroseismic analysis of Alpha Cen B. To conclude, I will show how a similar approach was successfully applied to test alternative theories of gravity, using solar neutrinos and helioseismic data.

2013 July 04, 13:30

IA/U.Porto
Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto

Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa Fundação para a Ciência e a Tecnologia
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