11-12 December 2018
Center for Astrophysics and Gravitation, Instituto Superior Técnico, University of Lisbon
Europe/Lisbon timezone

The effects of dark matter on Sun-like stars: neutrinos and helioseismology

11 Dec 2018, 10:00
50m
Anfiteatro Abreu Faro (Center for Astrophysics and Gravitation, Instituto Superior Técnico, University of Lisbon)

Anfiteatro Abreu Faro

Center for Astrophysics and Gravitation, Instituto Superior Técnico, University of Lisbon

Av. Rovisco Pais 1 1049-001 Lisboa, PORTUGAL

Speaker

Aaron Vincent (Queen's University)

Description

I will introduce the effects of dark matter capture in Sun-like stars, as they pass through the distribution of dark matter known to fill the Milky Way. I will focus on the effects of heat conduction by weakly interacting particles such as asymmetric dark matter: specifically, a reduction of central temperature and thus a significant change in the solar neutrino fluxes, as well as changes in the radius-dependent sound speed, reflected in high-precision helioseismology measurements. Such effects may help solve the solar abundance problem, a > 6-sigma discrepancy between the predicted and observed structure of the Sun in the Standard Solar Model, which has confounded solar physicists for over a decade. I will briefly discuss other effects of dark matter on stars, as well as complementary probes from laboratory experiments.

Presentation Materials