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PHYSICS & ASTRONOMY SEMINAR: The Emerging Paradigm of Tepid Star Magnetism

October 11, 2019 @ 1:30 pm

James Sikora,
Bishop’s University

Our understanding of stellar magnetic fields has important and widespread implications within various astronomical contexts. In particular, magnetic fields hosted by high-mass (hot) stars can result in mass-loss quenching, which can influence the star’s evolution and ultimately, the chemical evolution of the Galaxy. Intermediate-mass stars exhibit similar structures to that of hotter stars but lack the associated strong stellar winds; therefore, these “tepid” stars provide a useful laboratory for studying the origin and evolution of magnetic fields of all stars that are much hotter than the Sun. The past decade has seen several significant discoveries related to tepid star magnetism largely brought about by advancements in both ground- and space-based observational capabilities. In this presentation, I will review the properties and effects of stellar magnetic fields across the main sequence, how these phenomena are being studied, and discuss an emerging paradigm within the tepid star regime.


October 11, 2019
1:30 pm
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Physics Department
819-822-9600 ext. 2355